{"id":"CVE-2026-117990","aliases":[],"title":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component","description":"Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.","severity":"unknown","score":null,"published":"2026-10-27T14:05:52.279Z","modified":"2026-10-27T18:30:16.748Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2079501","https://www.mozilla.org/security/advisories/mfsa2026-118/","https://www.mozilla.org/security/advisories/mfsa2026-120/","https://www.mozilla.org/security/advisories/mfsa2026-121/","https://www.mozilla.org/security/advisories/mfsa2026-122/"],"sources":[{"name":"CVE","id":"CVE-2026-117990","modified":"2026-10-27T18:30:16.748Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-117990"}],"assessments":[]}