Description
There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability affects Firefox < 144, Firefox ESR < 115.29, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4.
Problem types
Some non-writable Object properties could be modified
Product status
Credits
EntryHi
References
bugzilla.mozilla.org/show_bug.cgi?id=1989978
www.mozilla.org/security/advisories/mfsa2025-81/
www.mozilla.org/security/advisories/mfsa2025-82/
www.mozilla.org/security/advisories/mfsa2025-83/
www.mozilla.org/security/advisories/mfsa2025-84/
www.mozilla.org/security/advisories/mfsa2025-85/
