Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck
CVE-2026-114401Trudesk through 1.2.11 Username Enumeration via Regex Injection in /api/v1/login
Medium 5.3
In plain English
A medium-severity security flaw in trudesk from polonel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.4%top 61.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Trudesk through 1.2.11 contains a regular expression injection vulnerability that allows unauthenticated attackers to enumerate usernames by submitting regex patterns to POST /api/v1/login. Attackers can send alternations or prefixes like (admin|root) or a.* and distinguish 'Invalid User' from 'Invalid Password' responses to discover valid accounts.
Affected products (as reported)
Weakness: CWE-943 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://hackmd.io/@leediay/multiple-vuln-trudesk-1211 third-party-advisory
- https://github.com/polonel/trudesk/blob/v1.2.11/src/models/user.js#L310-L319 technical-description
- https://github.com/polonel/trudesk/blob/v1.2.11/src/controllers/api/v1/common.js#L45-L65 technical-description
- https://github.com/polonel/trudesk product
- VulnCheck Advisory: Trudesk through 1.2.11 Username Enumeration via Regex Injection in /api/v1/login third-party-advisory