An issue was discovered in RWS WorldServer before 11.7.3. /clientLogin deserializes Java objects without authentication, leading to command execution on the host.

An issue was discovered in RWS WorldServer before 11.7.3. Adding a token parameter with the value of 02 bypasses all authentication requirements. Arbitrary Java code can be uploaded and executed via a .jar archive to the ws-api/v2/customizations/api endpoint.

Session tokens in RWS WorldServer 11.7.3 and earlier have a low entropy and can be enumerated, leading to unauthorized access to user sessions.