CVE-2026-56104

Descripción

Chainlit before 2.10.1 contains a session hijacking vulnerability that allows unauthenticated attackers to restore and inherit authenticated user sessions by presenting a valid sessionId during WebSocket session restoration without ownership verification. Attackers can exploit the restore_existing_session path to assume a victim-s permissions and roles, enabling unauthorized invocation of tools and access to data restricted to the authenticated victim.