CVE-2026-34828

EIP tracks 1 public exploit for CVE-2026-34828. PoCs published by 0xmrma.

AI-analyzed exploit summary This repository provides a detailed technical analysis of CVE-2026-34828, a session persistence vulnerability in listmonk where authenticated sessions remain valid after password resets or changes. The writeup includes root cause analysis, code paths, and proof-of-concept validation steps.

listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, a session management vulnerability allows previously issued authenticated sessions to remain valid after sensitive account security changes, specifically password reset and password change. As a result, an attacker who has already obtained a valid session cookie can retain access to the account even after the victim changes or resets their password. This weakens account recovery and session security guarantees. This issue has been patched in version 6.1.0.