Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.Referenceshttps://www.mozilla.org/security/advisories/mfsa2023-06/https://www.mozilla.org/security/advisories/mfsa2023-05/https://www.mozilla.org/security/advisories/mfsa2023-07/https://bugzilla.mozilla.org/show_bug.cgi?id=1811939
