{"schema_version": "1.7.0", "id": "RLSA-2026:67129", "modified": "2026-09-27T06:14:29.142119Z", "published": "2026-09-27T06:09:48.719689Z", "upstream": ["CVE-2026-16365", "CVE-2026-75874", "CVE-2026-84119", "CVE-2026-84120", "CVE-2026-84121", "CVE-2026-84122", "CVE-2026-84124", "CVE-2026-84131", "CVE-2026-84143", "CVE-2026-84145"], "summary": "Important: firefox security update", "details": "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nSecurity Fix(es):\n\n* firefox: thunderbird: Privilege escalation in the DOM: Workers component (CVE-2026-16365)\n\n* firefox: thunderbird: Sandbox escape in the Remote Settings Client component (CVE-2026-75874)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Security component (CVE-2026-84121)\n\n* firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2, Firefox ESR 140.15 and Firefox ESR 115.40 (CVE-2026-84145)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Navigation component (CVE-2026-84119)\n\n* firefox: Use-after-free in the Audio/Video component (CVE-2026-84120)\n\n* firefox: Privilege escalation due to invalid pointer in the Graphics component (CVE-2026-84131)\n\n* firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-84124)\n\n* firefox: Use-after-free in the Audio/Video component (CVE-2026-84122)\n\n* firefox: Internally found bugs fixed in Firefox 155, Firefox ESR 153.2 and Firefox ESR 140.15 (CVE-2026-84143)\n\nFor 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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:10", "name": "firefox", "purl": "pkg:rpm/rocky-linux/firefox?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:140.15.0-1.el10_2"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:67129"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2503504"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517832"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526753"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526760"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526764"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526765"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526767"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526773"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526778"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526781"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:67129"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:67129"}}