I'm not sure if it's going to persuade you but here is an example:

https://github.com/uclouvain/openjpeg

Basically the only library for reading jp2k data (complicated specs, ask your AI to one shot an implementation, mine said "it's 3000 lines of fiddly spec, too complicated"). Issues full of buffer-overflows. Recently unmaintained.

Used in tons of projects, now all possibly vulnerable.