CVE-2026-44985
CriticalCVSS 9.6Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
Cross-Site WebSocket Hijacking vulnerability in Dozzle prior to 10.5.2. The WebSocket upgrader for /exec and /attach endpoints accepts requests from any origin, and the JWT cookie uses SameSite: Lax. An attacker on the same site (e.g., a subdomain) can hijack the WebSocket session and gain interactive shell access to a container.
Risk Assessment
An attacker can gain shell access to containers the victim has access to, potentially leading to data leakage or further compromise.
Recommendation
Update Dozzle to version 10.5.2 or later.
Original NVD description (English source)
Dozzle is a realtime log viewer for docker containers. Prior to 10.5.2, he WebSocket upgrader for the /exec and /attach endpoints uses CheckOrigin: func(r *http.Request) bool { return true }, accepting upgrade requests from any origin. Combined with the JWT cookie using SameSite: Lax, this enables Cross-Site WebSocket Hijacking (CSWSH). An attacker hosting a page on a same-site origin (e.g., a sibling subdomain, or another service on localhost) can initiate a WebSocket connection to the exec endpoint that carries the victim's valid JWT cookie, gaining interactive shell access in any container the victim is authorized to access. This vulnerability is fixed in 10.5.2.