{"schema_version": "1.7.0", "id": "RLSA-2026:80674", "modified": "2026-10-24T00:12:27.554311Z", "published": "2026-10-24T00:08:31.522066Z", "upstream": ["CVE-2026-100756", "CVE-2026-100757", "CVE-2026-100758", "CVE-2026-100759", "CVE-2026-100762", "CVE-2026-100766", "CVE-2026-100767", "CVE-2026-100769", "CVE-2026-100770", "CVE-2026-100771", "CVE-2026-100772", "CVE-2026-100773", "CVE-2026-100774", "CVE-2026-100775", "CVE-2026-100776", "CVE-2026-100777", "CVE-2026-100778", "CVE-2026-100779", "CVE-2026-100780", "CVE-2026-100781", "CVE-2026-100782", "CVE-2026-100783", "CVE-2026-100784", "CVE-2026-100785", "CVE-2026-100786", "CVE-2026-100788", "CVE-2026-100789", "CVE-2026-100790", "CVE-2026-100791", "CVE-2026-100792", "CVE-2026-100794", "CVE-2026-100797", "CVE-2026-100801", "CVE-2026-100803", "CVE-2026-100807", "CVE-2026-100811", "CVE-2026-100818", "CVE-2026-100819", "CVE-2026-100820", "CVE-2026-100821", "CVE-2026-100832", "CVE-2026-96869"], "summary": "Important: thunderbird security update", "details": "Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nSecurity Fix(es):\n\n* firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100832)\n\n* firefox: Use-after-free in the Layout: Text and Fonts component (CVE-2026-100784)\n\n* firefox: thunderbird: Privilege escalation in the DLL Services component (CVE-2026-100801)\n\n* firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Internationalization component (CVE-2026-100794)\n\n* firefox: thunderbird: Privilege escalation in the Address Bar component (CVE-2026-100820)\n\n* firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100777)\n\n* firefox: thunderbird: Information disclosure in the Networking: JAR component (CVE-2026-100766)\n\n* firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-100779)\n\n* firefox: thunderbird: Privilege escalation in the DOM: Service Workers component (CVE-2026-100807)\n\n* firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-100792)\n\n* firefox: Privilege escalation due to use-after-free in the Graphics: WebRender component (CVE-2026-100797)\n\n* firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the XPCOM component (CVE-2026-100819)\n\n* firefox: thunderbird: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-100776)\n\n* firefox: thunderbird: Use-after-free in the Widget component (CVE-2026-100757)\n\n* firefox: Sandbox escape due to use-after-free in the Graphics component (CVE-2026-100786)\n\n* firefox: thunderbird: Information disclosure in the Networking component (CVE-2026-96869)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component (CVE-2026-100770)\n\n* firefox: thunderbird: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-100769)\n\n* firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-100791)\n\n* firefox: thunderbird: Sandbox escape due to use-after-free in the Widget: Gtk component (CVE-2026-100818)\n\n* firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics component (CVE-2026-100782)\n\n* firefox: firefox: Sandbox escape via use-after-free in DOM component (CVE-2026-100811)\n\n* firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100772)\n\n* firefox: thunderbird: Uninitialized memory in the Storage: Quota Manager component (CVE-2026-100759)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Core & HTML component (CVE-2026-100778)\n\n* firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-100758)\n\n* firefox: thunderbird: Sandbox escape in the Graphics component (CVE-2026-100775)\n\n* firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-100781)\n\n* firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-100774)\n\n* firefox: thunderbird: Same-origin policy bypass in the WebExtensions component (CVE-2026-100803)\n\n* firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100789)\n\n* firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100785)\n\n* firefox: thunderbird: Site isolation issue in the Panning and Zooming component (CVE-2026-100821)\n\n* firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-100788)\n\n* firefox: thunderbird: Undefined behavior in the DOM: Streams component (CVE-2026-100771)\n\n* firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component (CVE-2026-100762)\n\n* firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-100790)\n\n* firefox: thunderbird: Use-after-free in the Storage: IndexedDB component (CVE-2026-100773)\n\n* firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100780)\n\n* firefox: thunderbird: Use-after-free in the Networking: Cache component (CVE-2026-100767)\n\n* firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: Playback component (CVE-2026-100756)\n\n* firefox: thunderbird: Uninitialized memory in the Audio/Video component (CVE-2026-100783)\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": "thunderbird", "purl": "pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:140.17.0-1.el10_2"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:80674"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543113"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543114"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543116"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543120"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543121"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543123"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543125"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543128"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543130"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543131"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543133"}, {"type": "REPORT", "url": 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