HIGH 8.8 NVD
CVE-2026-109778
Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2070547
- https://www.mozilla.org/security/advisories/mfsa2026-106/
- https://www.mozilla.org/security/advisories/mfsa2026-108/
This high severity vulnerability with a CVSS score of 8.8 was published on 2026-10-13 via NVD.
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