---
id: CVE-2026-93961
title: A security flaw has been discovered in Dromara UJCMS up to 12.3.1
summary: >-
  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. Per…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-266
  - CWE-285
vendor: Dromara
product: UJCMS
affected:
  - UJCMS 12.3.0
  - UJCMS 12.3.1
published: '2026-09-20'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T15:17:36.253'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93961'
references:
  - url: 'https://github.com/dromara/ujcms/'
    label: cna@vuldb.com
  - url: 'https://github.com/dromara/ujcms/issues/22'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-93961'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/944238'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/407920'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/407920/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-21T15:06:33.588379Z'
epss: 0.00578
epssPercentile: 0.45285
ingestedAt: '2026-09-20T05:14:31.079Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.