Red Hat Security Advisory: firefox security update
🔗 CVE IDs covered (18)
📋 Description
CVE-2026-8388 — firefox: thunderbird: Incorrect boundary conditions in the JavaScript Engine: JIT component CVE-2026-8391 — firefox: thunderbird: Other issue in the JavaScript Engine component CVE-2026-8401 — firefox: thunderbird: Sandbox escape in the Profile Backup component CVE-2026-8946 — firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: Web Codecs component CVE-2026-8947 — firefox: thunderbird: Use-after-free in the DOM: Bindings (WebIDL) component CVE-2026-8950 — firefox: Same-origin policy bypass in the Networking: HTTP component CVE-2026-8953 — firefox: Sandbox escape due to use-after-free in the Disability Access APIs component CVE-2026-8954 — firefox: Incorrect boundary conditions, integer overflow in the Audio/Video component CVE-2026-8955 — firefox: thunderbird: Privilege escalation in the DOM: Workers component CVE-2026-8956 — firefox: Integer overflow in the Networking: JAR component CVE-2026-8957 — firefox: Privilege escalation in the Enterprise Policies component CVE-2026-8958 — firefox: Information disclosure, sandbox escape in the Security: Process Sandboxing component CVE-2026-8961 — firefox: Spoofing issue in the Form Autofill component CVE-2026-8962 — firefox: Mitigation bypass in the DOM: Security component CVE-2026-8968 — firefox: Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component CVE-2026-8970 — firefox: Privilege escalation in the Security component CVE-2026-8974 — firefox: Memory safety bugs fixed in Firefox ESR 140.11 and Firefox 151 CVE-2026-8975 — firefox: Memory safety bugs fixed in Firefox ESR 115.36, Firefox ESR 140.11 and Firefox 151
🔗 References (21)
- selfhttps://access.redhat.com/errata/RHSA-2026:21380
- externalhttps://access.redhat.com/security/updates/classification/#important
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2476469
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2476475
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2476492
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479839
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479840
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479842
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479846
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479847
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479848
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479849
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479852
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479853
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479855
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479860
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479871
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479873
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479876
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2479880
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_21380.json