Editor code failed to check an attribute value. This could have led to an out-of-bounds read. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.
https://www.mozilla.org/security/advisories/mfsa2024-38/
https://www.mozilla.org/security/advisories/mfsa2024-37/
https://www.mozilla.org/security/advisories/mfsa2024-35/
https://www.mozilla.org/security/advisories/mfsa2024-34/