Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.CreditsAndrew McCreightReferenceshttps://bugzilla.mozilla.org/show_bug.cgi?id=2005845https://www.mozilla.org/security/advisories/mfsa2026-01/https://www.mozilla.org/security/advisories/mfsa2026-04/
