Red Hat Security Advisory: webkit2gtk3 security update
Multiple security vulnerabilities have been identified in webkit2gtk3, the GTK port of the WebKit web rendering engine, affecting Red Hat Enterprise Linux 9 and related products. These vulnerabilities include crashes, denial-of-service, information disclosure, bypass of security policies such as Same Origin Policy and Content Security Policy, user tracking, fingerprinting, sandbox escape, and cross-site scripting. The issues arise from processing maliciously crafted web content or websites. Red Hat has issued an important security update addressing these vulnerabilities.
AI Analysis
Technical Summary
The Red Hat security advisory RHSA-2026:19206 addresses 18 vulnerabilities in webkit2gtk3, the GTK port of WebKit. The flaws include multiple instances where processing maliciously crafted web content can cause unexpected 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 tracking via Safari web extensions (CVE-2026-20676), user fingerprinting (CVE-2026-20691), sandbox escape (CVE-2026-28859), and cross-site scripting (CVE-2026-28871). These vulnerabilities affect Red Hat Enterprise Linux 9 and related variants. The advisory references bugzilla entries and CVE pages for detailed impact and scoring information.
Potential Impact
Exploitation of these vulnerabilities may lead to denial-of-service conditions via process crashes, unauthorized disclosure of internal application states, bypass of critical web security policies (Same Origin Policy and Content Security Policy), user tracking and fingerprinting, sandbox escapes allowing processing of restricted content, and cross-site scripting attacks. These impacts can compromise the confidentiality, integrity, and availability of affected systems running webkit2gtk3 on Red Hat Enterprise Linux 9.
Mitigation Recommendations
Red Hat has released an important security update for webkit2gtk3 in Red Hat Enterprise Linux 9 addressing all listed vulnerabilities. Users and administrators should apply the update as detailed in the Red Hat advisory RHSA-2026:19206 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official update.
Red Hat Security Advisory: webkit2gtk3 security update
Description
Multiple security vulnerabilities have been identified in webkit2gtk3, the GTK port of the WebKit web rendering engine, affecting Red Hat Enterprise Linux 9 and related products. These vulnerabilities include crashes, denial-of-service, information disclosure, bypass of security policies such as Same Origin Policy and Content Security Policy, user tracking, fingerprinting, sandbox escape, and cross-site scripting. The issues arise from processing maliciously crafted web content or websites. Red Hat has issued an important security update addressing these vulnerabilities.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Red Hat security advisory RHSA-2026:19206 addresses 18 vulnerabilities in webkit2gtk3, the GTK port of WebKit. The flaws include multiple instances where processing maliciously crafted web content can cause unexpected 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 tracking via Safari web extensions (CVE-2026-20676), user fingerprinting (CVE-2026-20691), sandbox escape (CVE-2026-28859), and cross-site scripting (CVE-2026-28871). These vulnerabilities affect Red Hat Enterprise Linux 9 and related variants. The advisory references bugzilla entries and CVE pages for detailed impact and scoring information.
Potential Impact
Exploitation of these vulnerabilities may lead to denial-of-service conditions via process crashes, unauthorized disclosure of internal application states, bypass of critical web security policies (Same Origin Policy and Content Security Policy), user tracking and fingerprinting, sandbox escapes allowing processing of restricted content, and cross-site scripting attacks. These impacts can compromise the confidentiality, integrity, and availability of affected systems running webkit2gtk3 on Red Hat Enterprise Linux 9.
Mitigation Recommendations
Red Hat has released an important security update for webkit2gtk3 in Red Hat Enterprise Linux 9 addressing all listed vulnerabilities. Users and administrators should apply the update as detailed in the Red Hat advisory RHSA-2026:19206 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official update.
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: 6/1/2026, 9:15:20 PM
Last enriched: 6/1/2026, 9:18:27 PM
Last updated: 6/2/2026, 7:33:53 AM
Views: 5
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