A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.

redhat RHSA-2026:11329: RHSA-2026:11329: webkit2gtk3 security update (Important)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-10702 advisory.

    [2.52.3-1]
    - Update to 2.52.3

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6232 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6232-1                   security@debian.org     https://www.debian.org/security/                           Alberto Garcia     April 28, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : webkit2gtk     CVE ID         : CVE-2025-46299 CVE-2026-20643 CVE-2026-20664 CVE-2026-20665                      CVE-2026-20691 CVE-2026-28857 CVE-2026-28859 CVE-2026-28861                      CVE-2026-28871

    The following vulnerabilities have been discovered in the WebKitGTK     web engine:

    CVE-2025-46299

        Google Big Sleep discovered that processing maliciously crafted         web content may disclose internal states of the app.

    CVE-2026-20643

        Thomas Espach discovered that processing maliciously crafted web         content may bypass Same Origin Policy.

    CVE-2026-20664

        Daniel Rhea, Soehnke Benedikt Fischedick, Emrovsky & Switch, and         Yevhen Pervushyn discovered that processing maliciously crafted         web content may lead to an unexpected process crash

    CVE-2026-20665

        webb discovered that processing maliciously crafted web content         may prevent Content Security Policy from being enforced.

    CVE-2026-20691

        Gongyu Ma discovered that a maliciously crafted webpage may be         able to fingerprint the user.

    CVE-2026-28857

        Narcis Oliveras Fontas, Soehnke Benedikt Fischedick, Daniel Rhea,         and Nathaniel Oh discovered that processing maliciously crafted         web content may lead to an unexpected process crash.

    CVE-2026-28859

        greenbynox and Arni Hardarson discovered that a malicious website         may be able to process restricted web content outside the sandbox.

    CVE-2026-28861

        Hongze Wu and Shuaike Dong discovered that a malicious website may         be able to access script message handlers intended for other         origins.

    CVE-2026-28871

        @hamayanhamayan discovered that visiting a maliciously crafted         website may lead to a cross- site scripting attack.

    Starting from version 2.52.0, WebKitGTK can no longer be backported to     the oldstable distribution (bookworm). Because of that, the webkit2gtk     packages are no longer covered by security support in bookworm.

    For the stable distribution (trixie), these problems have been fixed in     version 2.52.1-1~deb13u1.

    We recommend that you upgrade your webkit2gtk packages.

    For the detailed security status of webkit2gtk please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/webkit2gtk

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-503:01 advisory.

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43213)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43214)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43457)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43511)
      * webkitgtk: Processing maliciously crafted web content may disclose internal states of the app     (CVE-2025-46299)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20608)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20635)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20636)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20644)
      * webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)
      * webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)
      * webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20664)
      * webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being     enforced (CVE-2026-20665)
      * webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-28857)
      * webkitgtk: A malicious website may be able to process restricted web content outside the sandbox     (CVE-2026-28859)
      * webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack     (CVE-2026-28871)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:10702 advisory.

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43213)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43214)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43457)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43511)

    * webkitgtk: Processing maliciously crafted web content may disclose internal states of the app     (CVE-2025-46299)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20608)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20635)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20636)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20644)

    * webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)

    * webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)

    * webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20664)

    * webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being     enforced (CVE-2026-20665)

    * webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-28857)

    * webkitgtk: A malicious website may be able to process restricted web content outside the sandbox     (CVE-2026-28859)

    * webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack     (CVE-2026-28871)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:10702 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43213)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43214)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43457)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43511)

    * webkitgtk: Processing maliciously crafted web content may disclose internal states of the app     (CVE-2025-46299)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20608)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20635)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20636)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20644)

    * webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)

    * webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)

    * webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20664)

    * webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being     enforced (CVE-2026-20665)

    * webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-28857)

    * webkitgtk: A malicious website may be able to process restricted web content outside the sandbox     (CVE-2026-28859)

    * webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack     (CVE-2026-28871)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:9692 advisory.

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43213)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43214)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43457)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43511)
      * webkitgtk: Processing maliciously crafted web content may disclose internal states of the app     (CVE-2025-46299)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20608)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20635)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20636)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20644)
      * webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)
      * webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)
      * webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20664)
      * webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being     enforced (CVE-2026-20665)
      * webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)
      * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-28857)
      * webkitgtk: A malicious website may be able to process restricted web content outside the sandbox     (CVE-2026-28859)
      * webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack     (CVE-2026-28871)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:9692 advisory.

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43213)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43214)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43457)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43511)

    * webkitgtk: Processing maliciously crafted web content may disclose internal states of the app     (CVE-2025-46299)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20608)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20635)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20636)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20644)

    * webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)

    * webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)

    * webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20664)

    * webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being     enforced (CVE-2026-20665)

    * webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-28857)

    * webkitgtk: A malicious website may be able to process restricted web content outside the sandbox     (CVE-2026-28859)

    * webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack     (CVE-2026-28871)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-9692 advisory.

    [2.52.3-0.1]
    - Update to 2.52.1

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:9692 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43213)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43214)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash     (CVE-2025-43457)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2025-43511)

    * webkitgtk: Processing maliciously crafted web content may disclose internal states of the app     (CVE-2025-46299)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20608)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20635)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20636)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20644)

    * webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)

    * webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)

    * webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-20664)

    * webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being     enforced (CVE-2026-20665)

    * webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash     (CVE-2026-28857)

    * webkitgtk: A malicious website may be able to process restricted web content outside the sandbox     (CVE-2026-28859)

    * webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack     (CVE-2026-28871)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1364-1 advisory.

    Update to version 2.52.0.

    Security issues fixed:

    - CVE-2023-43010: processing maliciously crafted web content may lead to memory corruption (bsc#1259950).
    - CVE-2025-31223: processing maliciously crafted web content may lead to memory corruption (bsc#1259949).
    - CVE-2025-31277: processing maliciously crafted web content may lead to memory corruption (bsc#1259948).
    - CVE-2025-43213: processing maliciously crafted web content may lead to an unexpected crash     (bsc#1259947).
    - CVE-2025-43214: processing maliciously crafted web content may lead to an unexpected crash     (bsc#1259946).
    - CVE-2025-43433: processing maliciously crafted web content may lead to memory corruption (bsc#1259945).
    - CVE-2025-43438: processing maliciously crafted web content may lead to an unexpected crash     (bsc#1259944).
    - CVE-2025-43441: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1259943).
    - CVE-2025-43457: processing maliciously crafted web content may lead to an unexpected crash     (bsc#1259942).
    - CVE-2025-43511: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1259941).
    - CVE-2025-46299: processing maliciously crafted web content may disclose internal states of an app     (bsc#1259940).
    - CVE-2026-20608: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1259939).
    - CVE-2026-20635: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1259938).
    - CVE-2026-20636: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1259937).
    - CVE-2026-20643: processing maliciously crafted web content may bypass Same Origin Policy (bsc#1261172).
    - CVE-2026-20644: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1259936).
    - CVE-2026-20652: a remote attacker may be able to cause a denial-of-service (bsc#1259935).
    - CVE-2026-20664: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1261173).
    - CVE-2026-20665: processing maliciously crafted web content may prevent Content Security Policy from     being enforced       (bsc#1261174).
    - CVE-2026-20676: a website may be able to track users through web extensions (bsc#1259934).
    - CVE-2026-20691: a maliciously crafted webpage may be able to fingerprint the user (bsc#1261175).
    - CVE-2026-28857: processing maliciously crafted web content may lead to an unexpected process crash     (bsc#1261176).
    - CVE-2026-28859: a malicious website may be able to process restricted web content outside the sandbox     (bsc#1261177).
    - CVE-2026-28861: a malicious website may be able to access script message handlers intended for other     origins       (bsc#1261178).
    - CVE-2026-28871: visiting a maliciously crafted website may lead to a cross-site scripting attack     (bsc#1261179).

    Other updates and bugfixes:

    - Make scrolling with touch input smoother for small movements.
    - Fix estimated load progress of downloads when Content-Length value is wrong.
    - Ensure that 'scrollend' events are correctly emitted after scroll animations.
    - Reduce the amount of useless MPRIS notifications produced by MediaSession when the information about     media being       played is incomplete.
    - Support turning off USE_GSTREAMER to configure the build with all multimedia features disabled.
    - Add Sysprof marks for mouse events.
    - Fix MediaSession icon for iheart.com not being displayed.
    - Fix the build with USE_GSTREAMER_GL disabled.
    - Fix the build with librice version 0.3.0 or newer.
    - Fix several crashes and rendering issues.
    - Translation updates: Georgian.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-36594550b0 advisory.

    Update to 2.52.1.

    Notable changes from 2.50 to 2.52:

     * Make text look like in other browsers by blending in linear color space.
     * Improved rendering performance by using a different tile size depending on whether GPU rendering is     enabled or not.
     * Improved composition scheduling to avoid blocking waiting for tile painting.
     * Improved performance of accelerated 2D canvas by recording operations for batched replay.
     * Improved async scrolling when main thread is busy by avoiding locks and rendering the scrollbars from     the scrolling thread.
     * Enabled dynamic MSAA for accelerated 2D canvas rendering.
     * Improved text rendering performance
     * Videos with BT2100-PQ colorspace are now tone-mapped to SDR, ensuring colours do not appear washed out.
     * Added support for the Audio Output Devices API.
     * Added API to handle WebXR permission requests.
     * Added API to query the immersive session status.
     * Added initial API for web extensions.

    Additional changes from 2.52.0 to 2.52.1:

     * Reduce the amount of useless MPRIS notifications produced by MediaSesion when the information about     media being played is incomplete.
     * Add Sysprof marks for mouse events.
     * Fix MediaSession icon for iheart.com not being displayed.
     * Fix several crashes and rendering issues.
     * Translation updates: Georgian.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-431948187d advisory.

    Update to 2.52.1.

    Notable changes from 2.50 to 2.52:

     * Make text look like in other browsers by blending in linear color space.
     * Improved rendering performance by using a different tile size depending on whether GPU rendering is     enabled or not.
     * Improved composition scheduling to avoid blocking waiting for tile painting.
     * Improved performance of accelerated 2D canvas by recording operations for batched replay.
     * Improved async scrolling when main thread is busy by avoiding locks and rendering the scrollbars from     the scrolling thread.
     * Enabled dynamic MSAA for accelerated 2D canvas rendering.
     * Improved text rendering performance
     * Videos with BT2100-PQ colorspace are now tone-mapped to SDR, ensuring colours do not appear washed out.
     * Added support for the Audio Output Devices API.
     * Added API to handle WebXR permission requests.
     * Added API to query the immersive session status.
     * Added initial API for web extensions.

    Additional changes from 2.52.0 to 2.52.1:

     * Reduce the amount of useless MPRIS notifications produced by MediaSesion when the information about     media being played is incomplete.
     * Add Sysprof marks for mouse events.
     * Fix MediaSession icon for iheart.com not being displayed.
     * Fix several crashes and rendering issues.
     * Translation updates: Georgian.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-f00460a7d9 advisory.

    Update to 2.52.1:

     * Reduce the amount of useless MPRIS notifications produced by MediaSesion when the information about     media being played is incomplete.
     * Add Sysprof marks for mouse events.
     * Fix MediaSession icon for iheart.com not being displayed.
     * Fix several crashes and rendering issues.
     * Translation updates: Georgian.

    ----

    Update to 2.52.0:

     * Make text look like in other browsers by blending in linear color space.
     * Improved rendering performance by using a different tile size depending on whether GPU rendering is     enabled or not.
     * Improved composition scheduling to avoid blocking waiting for tile painting.
     * Improved performance of accelerated 2D canvas by recording operations for batched replay.
     * Improved async scrolling when main thread is busy by avoiding locks and rendering the scrollbars from     the scrolling thread.
     * Enabled dynamic MSAA for accelerated 2D canvas rendering.
     * Improved text rendering performance
     * Videos with BT2100-PQ colorspace are now tone-mapped to SDR, ensuring colours do not appear washed out.
     * Added support for the Audio Output Devices API.
     * Added API to handle WebXR permission requests.
     * Added API to query the immersive session status.
     * Added initial API for web extensions.

    ----

    2.51.93:

     * Make text look like in other browsers by blending in linear color space.
     * Avoid composition for non visible layers with running animations.
     * Fix several crashes and rendering issues.


    ----

    2.51.92:

     * Fix PDF rendering broken by the accelerated 2D canvas performance improvements.
     * Fix flickering while scrolling in some edge cases.
     * Support for rotation and mirroring in internal WebCodecs encoder.
     * System fallback font selection no longer takes style into account.
     * Fix several crashes and rendering issues.





Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is     fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS     18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web     content may bypass Same Origin Policy. (CVE-2026-20643)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Apple iOS running on the mobile device is prior to 26.4. It is, therefore, affected by multiple vulnerabilities.

The remote host is running a version of macOS / Mac OS X that is 26.x prior to 26.4. It is, therefore, affected by multiple vulnerabilities:

  - Apache HTTP Server 2.4.65 and earlier with Server Side Includes (SSI) enabled and mod_cgid (but not     mod_cgi) passes the shell-escaped query string to #exec cmd=... directives. This issue affects Apache     HTTP Server before 2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue.
    (CVE-2025-58098)

  - When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a cross-protocol     redirect to a second URL that uses an IMAP, LDAP, POP3 or SMTP scheme, curl might wrongly pass on the     bearer token to the new target host. (CVE-2025-14524)

  - An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30     days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then     are repeated without delays until it succeeds. This issue affects Apache HTTP Server: from 2.4.30 before     2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue. (CVE-2025-55753)

  - Server-Side Request Forgery (SSRF) vulnerability in Apache HTTP Server on Windows with AllowEncodedSlashes     On and MergeSlashes Off allows to potentially leak NTLM hashes to a malicious server via SSRF and     malicious requests or content Users are recommended to upgrade to version 2.4.66, which fixes the issue.
    (CVE-2025-59775)

  - LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable     Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability     exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The     vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image     data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-     bounds memory access. This issue has been patched in version 1.6.51. (CVE-2025-64505)

Note that Nessus has not tested for these issues but has instead relied only on the operating system's self-reported version number.

The version of Apple iOS running on the mobile device is prior to 18.7.7. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Severity
310730	Oracle Linux 8 : webkit2gtk3 (ELSA-2026-10702)	Nessus	Oracle Linux Local Security Checks	medium
310721	Debian dsa-6232 : gir1.2-javascriptcoregtk-4.1 - security update	Nessus	Debian Local Security Checks	medium
310557	MiracleLinux 9 : webkit2gtk3-2.52.3-0.el9_7.1 (AXSA:2026-503:01)	Nessus	Miracle Linux Local Security Checks	medium
310555	RockyLinux 8 : webkit2gtk3 (RLSA-2026:10702)	Nessus	Rocky Linux Local Security Checks	medium
310401	RHEL 8 : webkit2gtk3 (RHSA-2026:10702)	Nessus	Red Hat Local Security Checks	medium
310151	AlmaLinux 9 : webkit2gtk3 (ALSA-2026:9692)	Nessus	Alma Linux Local Security Checks	medium
310118	RockyLinux 9 : webkit2gtk3 (RLSA-2026:9692)	Nessus	Rocky Linux Local Security Checks	medium
309853	Oracle Linux 9 : webkit2gtk3 (ELSA-2026-9692)	Nessus	Oracle Linux Local Security Checks	medium
309655	RHEL 9 : webkit2gtk3 (RHSA-2026:9692)	Nessus	Red Hat Local Security Checks	medium
306700	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : webkit2gtk3 (SUSE-SU-2026:1364-1)	Nessus	SuSE Local Security Checks	medium
306478	Fedora 42 : webkitgtk (2026-36594550b0)	Nessus	Fedora Local Security Checks	medium
306476	Fedora 43 : webkitgtk (2026-431948187d)	Nessus	Fedora Local Security Checks	medium
304343	Fedora 44 : webkitgtk (2026-f00460a7d9)	Nessus	Fedora Local Security Checks	medium
304118	Linux Distros Unpatched Vulnerability : CVE-2026-20643	Nessus	Misc.	medium
303482	Apple iOS < 26.4 Multiple Vulnerabilities (126792)	Nessus	Mobile Devices	high
303481	macOS 26.x < 26.4 Multiple Vulnerabilities (126794)	Nessus	MacOS X Local Security Checks	high
303480	Apple iOS < 18.7.7 Multiple Vulnerabilities (126793)	Nessus	Mobile Devices	high

Detections

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CVE-2026-20643

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