CVE-2023-6863 (published 2023-12-19T13:38:44.181Z)
The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
Affected products: Vendor: Mozilla
Product: Firefox ESR
Versions: unspecified