CVE-2026-85751

Mailu is a mail server distributed as a set of Docker images. In deployments where PROXY_AUTH_WHITELIST was configured but REAL_IP_HEADER was unset (Mailu 2.0 through 2024.06.54; helm-charts prior to 2.7.3), nginx trusted a client-controlled X-Forwarded-By header for proxy authentication. The pro...