{"schemaVersion":3,"id":"SUSE-SU-2026:0260-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Security update for MozillaFirefox\n\nThis update for MozillaFirefox fixes the following issues:\n\nUpdate to Firefox Extended Support Release 140.7.0 ESR (bsc#1256340).\n\n- MFSA 2026-03\n  * CVE-2026-0877: Mitigation bypass in the DOM: Security component\n  * CVE-2026-0878: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component\n  * CVE-2026-0879: Sandbox escape due to incorrect boundary conditions in the Graphics component\n  * CVE-2026-0880: Sandbox escape due to integer overflow in the Graphics component\n  * CVE-2026-0882: Use-after-free in the IPC component\n  * CVE-2025-14327: Spoofing issue in the Downloads Panel component\n  * CVE-2026-0883: Information disclosure in the Networking component\n  * CVE-2026-0884: Use-after-free in the JavaScript Engine component\n  * CVE-2026-0885: Use-after-free in the JavaScript: GC component\n  * CVE-2026-0886: Incorrect boundary conditions in the Graphics component\n  * CVE-2026-0887: Clickjacking issue, information disclosure in the PDF Viewer component\n  * CVE-2026-0890: Spoofing issue in the DOM: Copy-Paste and Drag-Drop component\n  * CVE-2026-0891: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 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140.7.0-150200.152.216.1","eol":null,"hubHref":null}],"affectedCount":12,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20260260-1/","label":"www.suse.com/support/update/announcement/2026/suse-su-20260260-1/","hostname":"www.suse.com","tags":["Advisory"]},{"url":"https://bugzilla.suse.com/1256340","label":"bugzilla.suse.com/1256340","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://www.suse.com/security/cve/CVE-2025-14327","label":"www.suse.com/security/cve/CVE-2025-14327","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0877","label":"www.suse.com/security/cve/CVE-2026-0877","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0878","label":"www.suse.com/security/cve/CVE-2026-0878","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0879","label":"www.suse.com/security/cve/CVE-2026-0879","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0880","label":"www.suse.com/security/cve/CVE-2026-0880","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0882","label":"www.suse.com/security/cve/CVE-2026-0882","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0883","label":"www.suse.com/security/cve/CVE-2026-0883","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0884","label":"www.suse.com/security/cve/CVE-2026-0884","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0885","label":"www.suse.com/security/cve/CVE-2026-0885","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0886","label":"www.suse.com/security/cve/CVE-2026-0886","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0887","label":"www.suse.com/security/cve/CVE-2026-0887","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0890","label":"www.suse.com/security/cve/CVE-2026-0890","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-0891","label":"www.suse.com/security/cve/CVE-2026-0891","hostname":"www.suse.com","tags":["WEB"]}],"lineage":{"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"],"downstream":[],"duplicates":[],"related":["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"]},"timeline":[{"kind":"published","date":"2026-01-22T16:11:44.000Z","label":"Published","detail":"Vulnerability 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