{"id":"RLSA-2026:89758","summary":"Important: firefox security, bug fix, and enhancement update","details":"Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nSecurity Fix(es):\n\n* libexpat: denial of service via crafted XML input (CVE-2026-45186)\n\n* expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214)\n\n* firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)\n\n* firefox: Use-after-free in the XML component (CVE-2026-109718)\n\n* firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)\n\n* firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)\n\n* firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)\n\n* firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)\n\n* firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724)\n\n* firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component (CVE-2026-109709)\n\n* firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component (CVE-2026-109705)\n\n* firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)\n\n* firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)\n\n* firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)\n\n* firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)\n\n* firefox: Sandbox escape due to incorrect boundary conditions in the Networking component (CVE-2026-109708)\n\n* firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)\n\n* firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)\n\n* firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)\n\n* firefox: Use-after-free in the SVG component (CVE-2026-109726)\n\n* firefox: Integer overflow in the Graphics component (CVE-2026-109730)\n\n* firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)\n\n* firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)\n\n* firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725)\n\n* firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)\n\n* firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)\n\n* firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)\n\n* firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)\n\n* firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)\n\nBug Fix(es) and Enhancement(s):\n\n* Firefox ESR 153 rebase [rhel-10.2.z] (JIRA:Rocky Linux-175166)\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":"2026-10-31T12:30:02.521758100Z","published":"2026-10-31T12:09:44.748638Z","upstream":["CVE-2026-109704","CVE-2026-109705","CVE-2026-109706","CVE-2026-109707","CVE-2026-109708","CVE-2026-109709","CVE-2026-109711","CVE-2026-109712","CVE-2026-109713","CVE-2026-109715","CVE-2026-109716","CVE-2026-109717","CVE-2026-109718","CVE-2026-109719","CVE-2026-109720","CVE-2026-109721","CVE-2026-109722","CVE-2026-109723","CVE-2026-109724","CVE-2026-109725","CVE-2026-109726","CVE-2026-109727","CVE-2026-109728","CVE-2026-109729","CVE-2026-109730","CVE-2026-109732","CVE-2026-109740","CVE-2026-45186","CVE-2026-77214"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:89758"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:89758"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2468575"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2547476"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550397"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550400"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550403"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550404"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550405"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550406"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550408"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550412"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550413"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550420"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550422"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550424"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550426"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550432"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550433"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550438"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550442"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550446"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550450"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550451"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550455"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550467"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550468"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550469"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550471"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550474"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550478"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:89758"}],"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":"0:153.5.0-1.el10_2"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:89758.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}