Dromara UJCMS up to 12.3.1 UserController UserController.java usernameExist Username improper authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k1.48

Summaryinfo

A vulnerability, which was classified as problematic, was found in Dromara UJCMS up to 12.3.1. The impacted 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. Executing a manipulation of the argument Username can lead to improper authorization. This vulnerability is registered as CVE-2026-93961. It is possible to launch the attack remotely. No exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in Dromara UJCMS up to 12.3.1 and classified as problematic. This vulnerability affects the function usernameExist of the file ujcms-cms/src/main/java/com/ujcms/cms/core/web/api/UserController.java of the component UserController. The manipulation of the argument username with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-93961. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/19/2026). The MITRE ATT&CK project declares the attack technique as T1548.002.

The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/19/2026 Advisory disclosed
09/19/2026 +0 days VulDB entry created
09/19/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 22
Status: Not defined

CVE: CVE-2026-93961 (🔒)
GCVE (CVE): GCVE-0-2026-93961
GCVE (VulDB): GCVE-100-407920

Entryinfo

Created: 09/19/2026 11:24
Changes: 09/19/2026 11:24 (57)
Complete: 🔍
Submitter: mjh_123
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #944238: Dromara UJCMS v12.3.1 CWE-285 Improper Authorization (by mjh_123)

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