CVE-2026-67607 LightFTP 2.3.1 Race Condition DoS via worker_thread_cleanup

LightFTP 2.3.1 contains a race condition vulnerability that allows remote attackers to crash the server by racing a fresh connection that reuses the FTP context against an in-progress ABRT cleanup. Attackers can exploit the unprotected re-check of WorkerThreadId between workerthreadcleanup and...

CVE-2026-67607

LightFTP 2.3.1 is affected by a race-condition DoS vulnerability where a fresh FTP connection reuses context during an in-progress ABRT cleanup, exposing an unprotected re-check of WorkerThreadId between worker_thread_cleanup() and pthread_join() outside MTLock. This can cause pthread_join() to o...