Vulnerability · Published Sep 20, 2026 · Assigned by VulDB
CVE-2026-93961Dromara UJCMS UserController UserController.java usernameExist improper authorization
Medium 5.3
In plain English
A medium-severity security flaw in UJCMS from Dromara. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Official description
A security flaw has been discovered in Dromara UJCMS up to 12.3.1. The affected element is the function usernameExist of the file ujcms-cms/src/main/java/com/ujcms/cms/core/web/api/UserController.java of the component UserController. Performing a manipulation of the argument Username results in improper authorization. It is possible to initiate the attack remotely. The project was informed of the problem early through an issue report but has not responded yet.
Affected products (as reported)
Weakness: CWE-285, CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:R
References
- VDB-407920 | Dromara UJCMS UserController UserController.java usernameExist improper authorization vdb-entry, technical-description
- VDB-407920 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-93961 | CVE Analysis and Report third-party-advisory
- Submit #944238 | Dromara UJCMS v12.3.1 CWE-285 Improper Authorization third-party-advisory
- https://github.com/dromara/ujcms/issues/22 issue-tracking
- https://github.com/dromara/ujcms/ product