The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:42062 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 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 Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6398 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6398-1                   security@debian.org     https://www.debian.org/security/                           Alberto Garcia     July 23, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : webkit2gtk     CVE ID         : CVE-2024-4367 CVE-2026-28847 CVE-2026-28883 CVE-2026-28901                      CVE-2026-28902 CVE-2026-28903 CVE-2026-28904 CVE-2026-28905                      CVE-2026-28907 CVE-2026-28942 CVE-2026-28946 CVE-2026-28947                      CVE-2026-28953 CVE-2026-28955 CVE-2026-28958 CVE-2026-39872                      CVE-2026-43658 CVE-2026-43660 CVE-2026-43663 CVE-2026-43676                      CVE-2026-43699 CVE-2026-43701 CVE-2026-43705 CVE-2026-43707                      CVE-2026-43712 CVE-2026-43713 CVE-2026-43715 CVE-2026-43716                      CVE-2026-43720 CVE-2026-43721 CVE-2026-43725 CVE-2026-43726                      CVE-2026-43727 CVE-2026-43731 CVE-2026-43732 CVE-2026-43734                      CVE-2026-43740 CVE-2026-43742 CVE-2026-43745

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

    CVE-2024-4367

        Thomas Rinsma discovered that a type check was missing when         handling fonts in PDF.js, which would allow arbitrary JavaScript         execution in the PDF.js context.

    CVE-2026-28847

        DARKNAVY, an anonymous researcher and Daniel Rhea discovered that         processing maliciously crafted web content may lead to an         unexpected process crash.

    CVE-2026-28883

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

    CVE-2026-28901

        Joshua Rogers, Luigino Camastra, Igor Morgenstern, Guido Vranken,         Maher Azzouzi and Ngan Nguyen discovered that processing         maliciously crafted web content may lead to an unexpected process         crash.

    CVE-2026-28902

        Tristan Madani and Nathaniel Oh discovered that processing         maliciously crafted web content may lead to an unexpected process         crash.

    CVE-2026-28903

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

    CVE-2026-28904

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

    CVE-2026-28905

        Yuhao Hu, Yuanming Lai, Chenggang Wu, and Zhe Wang discovered that         processing maliciously crafted web content may lead to an         unexpected process crash.

    CVE-2026-28907

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

    CVE-2026-28942

        Milad Nasr and Nicholas Carlini discovered that processing         maliciously crafted web content may lead to an unexpected Safari         crash.

    CVE-2026-28946

        Gia Bui, dr3dd, and w0wbox discovered that processing maliciously         crafted web content may lead to an unexpected Safari crash.

    CVE-2026-28947

        dr3dd discovered that processing maliciously crafted web content         may lead to an unexpected Safari crash.

    CVE-2026-28953

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

    CVE-2026-28955

        wac and Kookhwan Lee discovered that processing maliciously         crafted web content may lead to an unexpected process crash.

    CVE-2026-28958

        Cantina discovered that an app may be able to access sensitive         user data.

    CVE-2026-39872

        Utkarsh Pal and Ignacio Sanmillan discovered that processing         maliciously crafted web content may lead to an unexpected process         crash.

    CVE-2026-43658

        Do Young Park discovered that processing maliciously crafted web         content may lead to an unexpected Safari crash.

    CVE-2026-43660

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

    CVE-2026-43663

        Soyeon Park, Amy Burnett, Khai Tran, sherkito, Kota Toda,         HexRabbit, NiNi, Tristan Madani and Brian Carpenter discovered         that processing maliciously crafted web content may lead to an         unexpected process crash.

    CVE-2026-43676

        Mateusz Krzywicki, dr3dd, and Tommy DeVoss discovered that         processing maliciously crafted web content may lead to an         unexpected process crash.

    CVE-2026-43699

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

    CVE-2026-43701

        Aaron Grattafiori discovered that a malicious website may be able         to process restricted web content outside the sandbox.

    CVE-2026-43705

        dr3dd discovered that processing maliciously crafted web content         may lead to memory corruption.

    CVE-2026-43707

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

    CVE-2026-43712

        Kwak Kiyong, Song Nuri, and Tristan Madani discovered that         processing maliciously crafted web content may lead to an         unexpected process crash.

    CVE-2026-43713

        Jody Ritonga discovered that visiting a website may leak sensitive         data.

    CVE-2026-43715

        Milad Nasr and Nicholas Carlini discovered that processing         maliciously crafted web content may lead to memory corruption.

    CVE-2026-43716

        Tuan, Duc, Amy Burnett and Evan Lambert discovered that processing         maliciously crafted web content may lead to an unexpected process         crash.

    CVE-2026-43720

        Gia Bui and Josef Korbel discovered that processing maliciously         crafted web content may lead to an unexpected process crash.

    CVE-2026-43721

        Idan Masas discovered that a malicious website may be able to         silently hijack clipboard data.

    CVE-2026-43725

        Luke Francis discovered that a malicious website may be able to         process restricted web content outside the sandbox.

    CVE-2026-43726

        Josef Korbel, Tristan Madani, Gia Bui and Narendra Singh         discovered that processing maliciously crafted web content may         lead to an unexpected process crash.

    CVE-2026-43727

        Tommy DeVoss, Gia Bui and Gurpreet Shergill discovered that         processing maliciously crafted web content may lead to an         unexpected process crash.

    CVE-2026-43731

        dr3dd discovered that processing maliciously crafted web content         may lead to memory corruption.

    CVE-2026-43732

        Nan Wang discovered that processing maliciously crafted web         content may disclose sensitive user information.

    CVE-2026-43734

        Jonathan Alush-Aben discovered that processing maliciously crafted         web content may lead to an unexpected process crash.

    CVE-2026-43740

        Nathaniel Oh and Arni Hardarson discovered that processing         maliciously crafted web content may result in the disclosure of         process memory.

    CVE-2026-43742

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

    CVE-2026-43745

        Amy Burnett and Khai Tran discovered that processing maliciously         crafted web content may lead to an unexpected process crash.

    For the stable distribution (trixie), these problems have been fixed in     version 2.52.5-1~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 openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21508-1 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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:54572 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)

    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-2026:59326 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.

ID	Name	Product	Family	Published	Updated	Severity
329044	RockyLinux 9 : webkit2gtk3 (RLSA-2026:42062)	Nessus	Rocky Linux Local Security Checks	7/22/2026	7/23/2026	high
329249	Debian dsa-6398 : gir1.2-javascriptcoregtk-4.1 - security update	Nessus	Debian Local Security Checks	7/23/2026	7/24/2026	high
331663	openSUSE 16: WebKitGTK-4.0-lang / WebKitGTK-4.1-lang / WebKitGTK-6.0-lang / etc (openSUSE-SU-2026:21508-1)	Nessus	SuSE Local Security Checks	8/3/2026	8/4/2026	high
335245	RHEL 9 : webkit2gtk3 (RHSA-2026:54572)	Nessus	Red Hat Local Security Checks	8/13/2026	8/14/2026	high
339456	RHEL 8 : webkit2gtk3 (RHSA-2026:59326)	Nessus	Red Hat Local Security Checks	8/25/2026	8/26/2026	high

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