Detections
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RHEL 9 : webkit2gtk3 (RHSA-2026:9692)
medium Nessus Plugin ID 309655
Synopsis
The remote Red Hat host is missing one or more security updates for webkit2gtk3.Description
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.
Solution
Update the RHEL webkit2gtk3 package based on the guidance in RHSA-2026:9692.See Also
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2448781
https://bugzilla.redhat.com/show_bug.cgi?id=2448782
https://bugzilla.redhat.com/show_bug.cgi?id=2448786
https://bugzilla.redhat.com/show_bug.cgi?id=2448787
https://bugzilla.redhat.com/show_bug.cgi?id=2448788
https://bugzilla.redhat.com/show_bug.cgi?id=2448789
https://bugzilla.redhat.com/show_bug.cgi?id=2448790
https://bugzilla.redhat.com/show_bug.cgi?id=2448791
https://bugzilla.redhat.com/show_bug.cgi?id=2448792
https://bugzilla.redhat.com/show_bug.cgi?id=2448793
https://bugzilla.redhat.com/show_bug.cgi?id=2448794
https://bugzilla.redhat.com/show_bug.cgi?id=2453000
https://bugzilla.redhat.com/show_bug.cgi?id=2453001
https://bugzilla.redhat.com/show_bug.cgi?id=2453002
https://bugzilla.redhat.com/show_bug.cgi?id=2453003
https://bugzilla.redhat.com/show_bug.cgi?id=2453004
https://bugzilla.redhat.com/show_bug.cgi?id=2453006
https://bugzilla.redhat.com/show_bug.cgi?id=2453008
Plugin Details
Severity: Medium
ID: 309655
File Name: redhat-RHSA-2026-9692.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 4/22/2026
Updated: 4/22/2026
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.0
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2026-20676
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:webkit2gtk3, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-jsc-devel, p-cpe:/a:redhat:enterprise_linux:webkit2gtk3-devel
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/22/2026
Vulnerability Publication Date: 7/29/2025
Reference Information
CVE: CVE-2025-43213, CVE-2025-43214, CVE-2025-43457, CVE-2025-43511, CVE-2025-46299, CVE-2026-20608, CVE-2026-20635, CVE-2026-20636, CVE-2026-20643, CVE-2026-20644, CVE-2026-20652, CVE-2026-20664, CVE-2026-20665, CVE-2026-20676, CVE-2026-20691, CVE-2026-28857, CVE-2026-28859, CVE-2026-28871