Version 2.4.5 of the fastcgi library was released last week: https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5
It fixed CVE-2025-23016, which is described as "an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c." The upstream bug report can be found at: https://github.com/FastCGI-Archives/fcgi2/issues/67 and a detailed writeup from the discoverers at: https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library which suggests both upgrading to the fixed version and "limiting potential remote access to the FastCGI socket by declaring it as a UNIX socket." -- -Alan Coopersmith- alan.coopersm...@oracle.com Oracle Solaris Engineering - https://blogs.oracle.com/solaris
