{"id":"CVE-2026-74946","published":"2026-08-18T12:23:30Z","modified":"2026-10-28T16:35:44Z","title":"Information disclosure due to incorrect boundary conditions in the Graphics: CanvasWebGL component","vendor":"Mozilla","product":"Firefox","tier":"tail","description":{"text":"Information disclosure due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.","provenance":"source","from":"CVE.org"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.00499,"percentile":0.42729,"provenance":"source"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2059997","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-74/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-75/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-76/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-77/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-78/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-79/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-80/","tags":[]}],"priority":{"score":14.7,"factors":[{"name":"EPSS percentile","points":8.55},{"name":"CVSS severity","points":6.16}]},"vendorSlug":"mozilla","euvd":{"id":"EUVD-2026-60753","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-mozilla-firefox-cwe-119"}}