Landray OA contains an unauthenticated HQL injection vulnerability that allows unauthenticated attackers to query arbitrary Hibernate entity classes by injecting malicious HQL syntax into the uid POST parameter of the wechatLoginHelper.do endpoint. Attackers can exploit the lack of input sanitization in the string-concatenated filter expression passed to the Hibernate findList() call to extract sensitive data such as administrator password hashes and, with sufficient database privileges, perform file-write operations enabling remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-03-11 (UTC).