{"id":"CVE-2026-109756","published":"2026-10-13T13:17:26.530","lastModified":"2026-10-14T04:18:16.933","description":"Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2069258","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-110/","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A privilege escalation vulnerability in Firefox's DOM Navigation component allows attackers to gain elevated privileges by manipulating navigation behavior, potentially leading to full system compromise.","exploitability":"Exploitation requires a user to visit a malicious website with a crafted navigation sequence, making it moderately difficult but achievable through social engineering or drive-by attacks.","blast_radius":"The vulnerability affects all users running Firefox versions prior to 158 or Firefox ESR 153.5, potentially impacting millions of users who may be tricked into visiting compromised sites.","remediation":"Upgrade to Firefox 158 or Firefox ESR 153.5 immediately, as these versions contain the necessary patches for this privilege escalation vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["privilege-escalation","browser","dom","firefox"],"model":"garnet-coder","analyzedAt":"2026-10-16T09:04:17.302Z"}}