CVE-2026-114401
Trudesk through 1.2.11 Username Enumeration via Regex Injection in /api/v1/login
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-943 |
| Vendor | polonel |
| Product | trudesk |
| Published | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
polonel / trudesk
0 ≤ 1.2.11
References
hackmd.io: https://hackmd.io/@leediay/multiple-vuln-trudesk-1211 github.com: https://github.com/polonel/trudesk/blob/v1.2.11/src/models/user.js#L310-L319 github.com: https://github.com/polonel/trudesk/blob/v1.2.11/src/controllers/api/v1/common.js#L45-L65 github.com: https://github.com/polonel/trudesk vulncheck.com: https://www.vulncheck.com/advisories/trudesk-through-1.2.11-username-enumeration-via-regex-injection-in-api-v1-login
Credits
leediay153 from Viettel Post