{"schema_version": "1.7.0", "id": "RLSA-2026:0924", "modified": "2026-01-22T09:08:07.606647Z", "published": "2026-01-22T09:06:38.168110Z", "upstream": ["CVE-2025-14327", "CVE-2026-0877", "CVE-2026-0878", "CVE-2026-0879", "CVE-2026-0880", "CVE-2026-0882", "CVE-2026-0883", "CVE-2026-0884", "CVE-2026-0885", "CVE-2026-0886", "CVE-2026-0887", "CVE-2026-0890", "CVE-2026-0891"], "summary": "Important: thunderbird security update", "details": "Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nSecurity Fix(es):\n\n* firefox: Spoofing issue in the Downloads Panel component (CVE-2025-14327)\n\n* firefox: Use-after-free in the JavaScript: GC component (CVE-2026-0885)\n\n* firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147 (CVE-2026-0891)\n\n* firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-0878)\n\n* firefox: Use-after-free in the IPC component (CVE-2026-0882)\n\n* firefox: Use-after-free in the JavaScript Engine component (CVE-2026-0884)\n\n* firefox: Information disclosure in the Networking component (CVE-2026-0883)\n\n* firefox: Mitigation bypass in the DOM: Security component (CVE-2026-0877)\n\n* firefox: Spoofing issue in the DOM: Copy & Paste and Drag & Drop component (CVE-2026-0890)\n\n* firefox: Clickjacking issue, information disclosure in the PDF Viewer component (CVE-2026-0887)\n\n* firefox: Sandbox escape due to incorrect boundary conditions in the Graphics component (CVE-2026-0879)\n\n* firefox: Sandbox escape due to integer overflow in the Graphics component (CVE-2026-0880)\n\n* firefox: Incorrect boundary conditions in the Graphics component (CVE-2026-0886)\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:9", "name": "thunderbird", "purl": "pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-9&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:140.7.0-1.el9_7"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:0924"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2420507"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428961"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428963"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428965"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428966"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428967"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428968"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428969"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428971"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428972"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428973"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428975"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428978"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}