{"id":"RLSA-2026:67129","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.","modified":"2026-09-27T06:30:02.793219363Z","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"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:67129"},"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"}],"affected":[{"package":{"name":"firefox","ecosystem":"Rocky Linux:10","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"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:67129.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}