In Trimble TM4WEB 21.4.0.4 due to security misconfiguration with session identifiers, it is possible to recover valid session cookies via reflected cross-site scripting affecting the external document viewer endpoint.

In Trimble TM4WEB 21.4.0.4, the external bill viewer endpoint is vulnerable to reflected cross-site scripting via injection in a arbitrary parameter appended to the URL.

Trimble TM4Web 22.2.0 allows unauthenticated attackers to access /inc/tmajax.msw?func=UserfromUUID&uuid= to retrieve the last registration access code and use this access code to register a valid account. via a PUT /inc/tmajax.msw request. If the access code was used to create an Administrator account, attackers are also able to register new Administrator accounts with full privileges.