{"id":"RLSA-2026:89756","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* 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: Information disclosure in the PDF Viewer component (CVE-2026-109742)\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: Sandbox escape due to uninitialized memory in the DOM: Web Serial component (CVE-2026-109745)\n\n* firefox: Mitigation bypass in the File Handling component (CVE-2026-109782)\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 Audio/Video: Playback component (CVE-2026-109738)\n\n* firefox: Use-after-free in the Storage: Bucket File System component (CVE-2026-109741)\n\n* firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)\n\n* firefox: Other issue in the DOM: File component (CVE-2026-109744)\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: Incorrect boundary conditions in the Layout component (CVE-2026-109753)\n\n* firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)\n\n* firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109733)\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: Use-after-free in the DOM: Workers component (CVE-2026-109752)\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: Mitigation bypass in the Enterprise Policies component (CVE-2026-109737)\n\n* firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)\n\n* firefox: Information disclosure in the Networking component (CVE-2026-109751)\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: Frame poisoning in the Layout component (CVE-2026-109736)\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\n* firefox: Privilege escalation in the Panning and Zooming component (CVE-2026-109743)\n\nBug Fix(es) and Enhancement(s):\n\n* Firefox ESR 153 rebase [rhel-8.10.z] (JIRA:Rocky Linux-175143)\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":"2026-10-31T12:30:03.418250008Z","published":"2026-10-31T12:01:20.904461Z","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-2026-109733","CVE-2026-109736","CVE-2026-109737","CVE-2026-109738","CVE-2026-109740","CVE-2026-109741","CVE-2026-109742","CVE-2026-109743","CVE-2026-109744","CVE-2026-109745","CVE-2026-109751","CVE-2026-109752","CVE-2026-109753","CVE-2026-109782","CVE-2026-45186"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:89756","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:89756"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2468575"},{"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=2550401"},{"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=2550410"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550411"},{"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=2550417"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550419"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550420"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550421"},{"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=2550425"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550426"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550429"},{"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=2550434"},{"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=2550452"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550455"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550465"},{"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=2550470"},{"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":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550480"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:89756"}],"affected":[{"package":{"name":"firefox","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/firefox?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:153.5.0-1.el8_10"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:89756.json"}}],"schema_version":"1.9.2","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"}]}