Red Hat Security Advisory: webkit2gtk3 security update
Multiple security vulnerabilities have been identified in webkit2gtk3, the GTK port of the WebKit rendering engine, affecting Red Hat Enterprise Linux 9. These issues include crashes, denial-of-service, information disclosure, same-origin policy bypass, content security policy bypass, user fingerprinting, and cross-site scripting attacks triggered by processing maliciously crafted web content or websites. The vulnerabilities have been rated with high severity by Red Hat Product Security. An update is available to address these issues in Red Hat Enterprise Linux 9 and related variants.
AI Analysis
Technical Summary
Red Hat Product Security issued an important security advisory (RHSA-2026:19206) for webkit2gtk3 on Red Hat Enterprise Linux 9, addressing 18 CVEs related to processing maliciously crafted web content. The vulnerabilities include multiple causes of unexpected process crashes (CVE-2025-43213, CVE-2025-43214, CVE-2025-43457, CVE-2025-43511, CVE-2026-20608, CVE-2026-20635, CVE-2026-20636, CVE-2026-20644, CVE-2026-20664, CVE-2026-28857), denial-of-service (CVE-2026-20652), information disclosure (CVE-2025-46299), bypass of same-origin policy (CVE-2026-20643), prevention of content security policy enforcement (CVE-2026-20665), user fingerprinting (CVE-2026-20691), cross-site scripting (CVE-2026-28871), and sandbox escape allowing processing of restricted content (CVE-2026-28859). Additionally, a vulnerability allows tracking users through Safari web extensions (CVE-2026-20676). The advisory provides links to Red Hat's update instructions and bugzilla fixes for each CVE. No CVSS scores are provided in the advisory, but the overall impact is rated as important (high severity).
Potential Impact
The vulnerabilities can lead to unexpected process crashes causing denial-of-service conditions, potential information disclosure of internal application states, bypass of web security policies such as same-origin and content security policies, user fingerprinting, cross-site scripting attacks, and sandbox escapes allowing malicious websites to process restricted content. These impacts can compromise the confidentiality, integrity, and availability of applications using webkit2gtk3 on affected Red Hat Enterprise Linux 9 systems.
Mitigation Recommendations
Red Hat has released an official security update for webkit2gtk3 on Red Hat Enterprise Linux 9 to address these vulnerabilities. Users should apply the update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No additional mitigation steps are indicated beyond applying the official patch. Patch status is confirmed as fixed in the updated packages provided by Red Hat.
Red Hat Security Advisory: webkit2gtk3 security update
Description
Multiple security vulnerabilities have been identified in webkit2gtk3, the GTK port of the WebKit rendering engine, affecting Red Hat Enterprise Linux 9. These issues include crashes, denial-of-service, information disclosure, same-origin policy bypass, content security policy bypass, user fingerprinting, and cross-site scripting attacks triggered by processing maliciously crafted web content or websites. The vulnerabilities have been rated with high severity by Red Hat Product Security. An update is available to address these issues in Red Hat Enterprise Linux 9 and related variants.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat Product Security issued an important security advisory (RHSA-2026:19206) for webkit2gtk3 on Red Hat Enterprise Linux 9, addressing 18 CVEs related to processing maliciously crafted web content. The vulnerabilities include multiple causes of unexpected process crashes (CVE-2025-43213, CVE-2025-43214, CVE-2025-43457, CVE-2025-43511, CVE-2026-20608, CVE-2026-20635, CVE-2026-20636, CVE-2026-20644, CVE-2026-20664, CVE-2026-28857), denial-of-service (CVE-2026-20652), information disclosure (CVE-2025-46299), bypass of same-origin policy (CVE-2026-20643), prevention of content security policy enforcement (CVE-2026-20665), user fingerprinting (CVE-2026-20691), cross-site scripting (CVE-2026-28871), and sandbox escape allowing processing of restricted content (CVE-2026-28859). Additionally, a vulnerability allows tracking users through Safari web extensions (CVE-2026-20676). The advisory provides links to Red Hat's update instructions and bugzilla fixes for each CVE. No CVSS scores are provided in the advisory, but the overall impact is rated as important (high severity).
Potential Impact
The vulnerabilities can lead to unexpected process crashes causing denial-of-service conditions, potential information disclosure of internal application states, bypass of web security policies such as same-origin and content security policies, user fingerprinting, cross-site scripting attacks, and sandbox escapes allowing malicious websites to process restricted content. These impacts can compromise the confidentiality, integrity, and availability of applications using webkit2gtk3 on affected Red Hat Enterprise Linux 9 systems.
Mitigation Recommendations
Red Hat has released an official security update for webkit2gtk3 on Red Hat Enterprise Linux 9 to address these vulnerabilities. Users should apply the update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No additional mitigation steps are indicated beyond applying the official patch. Patch status is confirmed as fixed in the updated packages provided by Red Hat.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19206
- Cve Count
- 18
- Additional Cves
- ["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"]
- Cvss Version
- null
Threat ID: 6a1df668e29bf47b50461238
Added to database: 06/01/2026, 21:15:20 UTC
Last enriched: 07/15/2026, 14:43:16 UTC
Last updated: 07/31/2026, 19:24:46 UTC
Views: 72
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