This issue was addressed through improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, Safari 26.3, macOS Tahoe 26.3, visionOS 26.3. A website may be able to track users through Safari web extensions.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1150-1 advisory.

    Update to version 2.52.0:

    - 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-2026-20644: 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-2026-20676: a website may be able to track users through web extensions (bsc#1259934).

    Changelog:

     - 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.
     + Fix several crashes and rendering issues.

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 SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1139-1 advisory.

    Update to version 2.52.0:

    - 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-2026-20644: 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-2026-20676: a website may be able to track users through web extensions (bsc#1259934).

    Changelog:

     - 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.
     + Fix several crashes and rendering issues.

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 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 remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6172 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6172-1                   security@debian.org     https://www.debian.org/security/                           Alberto Garcia     March 21, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : webkit2gtk     CVE ID         : CVE-2025-43214 CVE-2025-43457 CVE-2025-43511 CVE-2026-20608                      CVE-2026-20635 CVE-2026-20636 CVE-2026-20644 CVE-2026-20652                      CVE-2026-20676

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

    CVE-2025-43214

        shandikri discovered that processing maliciously crafted web         content may lead to an unexpected process crash.

    CVE-2025-43457

         Gary Kwong and Hossein Lotfi discovered that processing          maliciously crafted web content may lead to an unexpected process          crash.

    CVE-2025-43511

        Lee Dong Ha discovered that processing maliciously crafted web         content may lead to an unexpected process crash.

    CVE-2026-20608

        HanQing and Nan Wang discovered that processing maliciously         crafted web content may lead to an unexpected process crash.

    CVE-2026-20635

        EntryHi discovered that processing maliciously crafted web content         may lead to an unexpected process crash.

    CVE-2026-20636

        EntryHi discovered that processing maliciously crafted web content         may lead to an unexpected process crash.

    CVE-2026-20644

        HanQing and Nan Wang discovered that processing maliciously         crafted web content may lead to an unexpected process crash.

    CVE-2026-20652

        Nathaniel Oh discovered that a remote attacker may be able to         cause a denial-of-service.

    CVE-2026-20676

        Tom Van Goethem discovered that a website may be able to track         users through web extensions.

    For the oldstable distribution (bookworm), these problems have been fixed     in version 2.50.6-1~deb12u1.

    For the stable distribution (trixie), these problems have been fixed in     version 2.50.6-1~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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - This issue was addressed through improved state management. This issue is fixed in iOS 26.3 and iPadOS     26.3, Safari 26.3, macOS Tahoe 26.3, visionOS 26.3. A website may be able to track users through Safari     web extensions. (CVE-2026-20676)

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

The remote host is running a version of macOS / Mac OS X that is 26.x prior to 26.3. It is, therefore, affected by multiple vulnerabilities:

  - A race condition was addressed with improved handling of symbolic links. This issue is fixed in macOS     Tahoe 26.3, macOS Sonoma 14.8.4, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3. A     shortcut may be able to bypass sandbox restrictions. (CVE-2026-20677)

  - A path handling issue was addressed with improved logic. This issue is fixed in macOS Tahoe 26.3, macOS     Sonoma 14.8.4, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3, Safari 26.3. A     remote user may be able to write arbitrary files. (CVE-2026-20660)

  - libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small     document that is submitted for parsing. (CVE-2025-59375)

  - A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Tahoe 26.3.
    An app may be able to monitor keystrokes without user permission. (CVE-2026-20601)

  - The issue was addressed with improved handling of caches. This issue is fixed in macOS Sequoia 15.7.4,     macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to cause a denial-of-service. (CVE-2026-20602)

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 26.3. It is, therefore, affected by multiple vulnerabilities.

ID	Name	Product	Family	Severity
304484	SUSE SLES15 Security Update : webkit2gtk3 (SUSE-SU-2026:1150-1)	Nessus	SuSE Local Security Checks	medium
304374	SUSE SLES12 Security Update : webkit2gtk3 (SUSE-SU-2026:1139-1)	Nessus	SuSE Local Security Checks	medium
304343	Fedora 44 : webkitgtk (2026-f00460a7d9)	Nessus	Fedora Local Security Checks	medium
303253	Debian dsa-6172 : gir1.2-javascriptcoregtk-4.0 - security update	Nessus	Debian Local Security Checks	medium
303052	Linux Distros Unpatched Vulnerability : CVE-2026-20676	Nessus	Misc.	medium
298694	macOS 26.x < 26.3 Multiple Vulnerabilities (126348)	Nessus	MacOS X Local Security Checks	critical
298693	Apple iOS < 26.3 Multiple Vulnerabilities (126346)	Nessus	Mobile Devices	critical

Detections

Analytics

CVE-2026-20676

medium

Tenable Plugins

medium

medium

medium

medium

medium

critical

critical