CVE-2026-56016

EIP tracks 1 public exploit for CVE-2026-56016. PoCs published by HermesNA-1.

AI-analyzed exploit summary This repository contains an auto-generated stub module for CVE-2026-56016, a vulnerability in CGI::Session::ID::md5 (Perl) versions before 4.49 that generates predictable session IDs from low-entropy sources. The module includes placeholder code with no functional exploit implementation, only connection checks and TODO warnings.

CGI::Session::ID::md5 versions before 4.49 for Perl generate predictable session ids from low-entropy sources. The generate_id method builds the session id from a MD5 digest of the process id, the epoch time, and the built-in rand() function. All three are predictable, low-entropy sources: the PID is drawn from a small range, the epoch time can be guessed or read from the HTTP Date header, and Perl's rand() is unsuitable for security purposes because it is predictable and reversible. An attacker who predicts a session id can impersonate the corresponding session and bypass authentication.