The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:58550 advisory.

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

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:58564 advisory.

    WebKitGTK+ is port of the WebKit portable web rendering engine to the GTK+ platform. These packages     provide WebKitGTK+ for GTK+ 3.

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:59325 advisory.

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

    Security Fix(es):

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)

    * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)

    * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)

    * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)

    * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)

    * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)

    * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination     (CVE-2026-64787)

    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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:42088 advisory.

    * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-39872)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43663)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43676)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43699)
      * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43701)
      * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43705)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43707)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43712)
      * webkitgtk: webkitgtk: Visiting a website may leak sensitive data (CVE-2026-43713)
      * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43715)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43716)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43720)
      * webkitgtk: webkitgtk: A malicious website may silently hijack clipboard data (CVE-2026-43721)
      * webkitgtk: webkitgtk: A malicious website may process restricted web content outside the sandbox     (CVE-2026-43725)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43726)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43727)
      * webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption (CVE-2026-43731)
      * webkitgtk: webkitgtk: Maliciously crafted web content may disclose sensitive user information     (CVE-2026-43732)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43734)
      * webkitgtk: webkitgtk: Maliciously crafted web content may disclose process memory (CVE-2026-43740)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43742)
      * webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash     (CVE-2026-43745)

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 SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3396-1 advisory.

    - CVE-2024-4367: missing type check when handling fonts in PDF.js can allow arbitrary JavaScript execution       (bsc#1271638).
    - CVE-2026-39872: maliciously crafted web content can lead to an unexpected process crash (bsc#1271638).
    - CVE-2026-43663: maliciously crafted web content can lead to an unexpected process crash (bsc#1271638).
    - CVE-2026-43676: out-of-bounds access when processing web content can lead to an unexpected Safari crash       (bsc#1271638).
    - CVE-2026-43699: use-after-free issue when processing web content can lead to an unexpected process crash       (bsc#1271638).
    - CVE-2026-43701: malicious website can process restricted web content outside the sandbox (bsc#1271638).
    - CVE-2026-43705: type confusion issue when processing web content can lead to memory corruption     (bsc#1271638).
    - CVE-2026-43707: memory corruption issue when processing web content can lead to an unexpected process     crash       (bsc#1271638).
    - CVE-2026-43712: maliciously crafted web content can lead to an unexpected process crash (bsc#1271638).
    - CVE-2026-43713: visiting a website can leak sensitive data due to a permissions issue (bsc#1271638).
    - CVE-2026-43715: use-after-free issue when processing web content can lead to memory corruption     (bsc#1271638).
    - CVE-2026-43716: maliciously crafted web content can lead to an unexpected Safari crash (bsc#1271638).
    - CVE-2026-43720: use-after-free issue when processing web content can lead to an unexpected Safari crash       (bsc#1271638).
    - CVE-2026-43721: malicious website can silently hijack clipboard data (bsc#1271638).
    - CVE-2026-43725: unvalidated input can allow a malicious website to process restricted web content     outside the       sandbox (bsc#1271638).
    - CVE-2026-43726: use-after-free issue when processing web content can lead to an unexpected process crash       (bsc#1271638).
    - CVE-2026-43727: use-after-free issue when processing web content can lead to an unexpected Safari crash       (bsc#1271638).
    - CVE-2026-43731: use-after-free issue when processing web content can lead to memory corruption     (bsc#1271638).
    - CVE-2026-43732: path handling issue when processing web content can disclose sensitive user information       (bsc#1271638).
    - CVE-2026-43734: use-after-free issue when processing web content can lead to an unexpected process crash       (bsc#1271638).
    - CVE-2026-43740: maliciously crafted web content can result in the disclosure of process memory     (bsc#1271638).
    - CVE-2026-43742: use-after-free issue when processing web content can lead to an unexpected process crash       (bsc#1271638).
    - CVE-2026-43745: out-of-bounds write issue when processing web content can lead to an unexpected Safari     crash       (bsc#1271638).

    Changes for webkit2gtk3:

    - Update to version 2.52.5:

     * Fire scrollend event for instant programmatic scrolls.
     * Increase network idle connection timeout to 115 seconds.
     * Add User-Agent quirk for HBO Max.
     * Fix the build with system malloc.

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.

ID	Name	Product	Family	Published	Updated	Severity
339052	RHEL 9 : webkit2gtk3 (RHSA-2026:58550)	Nessus	Red Hat Local Security Checks	8/24/2026	8/24/2026	high
339096	RHEL 7 : webkitgtk4 (RHSA-2026:58564)	Nessus	Red Hat Local Security Checks	8/24/2026	8/25/2026	high
339455	RHEL 8 : webkit2gtk3 (RHSA-2026:59325)	Nessus	Red Hat Local Security Checks	8/25/2026	8/26/2026	high
328783	AlmaLinux 8 : webkit2gtk3 (ALSA-2026:42088)	Nessus	Alma Linux Local Security Checks	7/21/2026	7/22/2026	high
331423	SUSE SLES15: WebKitGTK-4.0-lang / WebKitGTK-4.1-lang / WebKitGTK-6.0-lang / etc (SUSE-SU-2026:3396-1)	Nessus	SuSE Local Security Checks	7/31/2026	8/3/2026	high

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