CVE-2026-44184 Cleanuparr: Reflective CORS combined with trusted-network auth allows cross-origin admin API reads

Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. Prior to 2.9.10, Cleanuparr's global CORS policy reflects every request Origin and combines it with AllowCredentials. When DisableAuthForLocalAddresses ...

EUVD-2026-29726

Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. Prior to 2.9.10, Cleanuparr's global CORS policy reflects every request Origin and combines it with AllowCredentials. When DisableAuthForLocalAddresses ...

CVE-2026-44183

CVE-2026-44183 affects Cleanuparr prior to 2.9.10. The vulnerability arises because TrustedNetworkAuthenticationHandler.ResolveClientIp uses the leftmost entry of the X-Forwarded-For header as the client IP, which is attacker-controlled since X-Forwarded-For is append-only. An unauthenticated rem...