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
trudesk_project: trudesk
References6
- github.com/polonel/trudesk/blob/v1.2.11/src/controllers/api/v1/… Patch
- github.com/polonel/trudesk/blob/v1.2.11/src/models/user.js#L310… Patch
- hackmd.io/@leediay/multiple-vuln-trudesk-1211 ExploitThird Party Advisory
- hackmd.io/@leediay/multiple-vuln-trudesk-1211 ExploitThird Party Advisory
- github.com/polonel/trudesk Product
- www.vulncheck.com/advisories/trudesk-through-1.2.11-username-en… Third Party Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 4.0
-
6.9
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 39 · as of 8 November 2026
- CWE
- CWE-943
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.