Auth bypass in Dromara Ujcms
CVE-2026-93961
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Dromara Ujcms — versions 12.3.0, 12.3.1
Weakness classification (CWE)
References
- vuldb.com/vuln/407920 (technical-description, vdb-entry)
- vuldb.com/vuln/407920/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-93961 (third-party-advisory)
- vuldb.com/submit/944238 (third-party-advisory)
- github.com/dromara/ujcms/issues/22 (issue-tracking)
- github.com/dromara/ujcms/ (product)
Frequently asked questions
- What is CVE-2026-93961?
- CVE-2026-93961 is a medium-severity vulnerability in Dromara Ujcms, classified under Incorrect Privilege Assignment. CVSS score: 5.3/10. Published 2026-09-20.
- How severe is CVE-2026-93961?
- Medium severity. CVSS v3 base score is 5.3 out of 10.