CVE-2026-114401
MEDIUM 6.9Trudesk 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.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.4%chance of exploitation in 30 days · 38th percentile
Impact if exploited
6.9CVSS 4.0 · MEDIUM
- ConfidentialityLow
- IntegrityNone
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-943: Improper Neutralization of Special Elements in Data Query Logic
CVSS vector
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
References and research data (JSON)
All CVSS metrics
- MEDIUM 6.9 v4.0 · CNA Primary
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 - MEDIUM 5.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - MEDIUM 6.9 v4.0 · NVD Secondary
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 - MEDIUM 5.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
Exploit-tagged references (not proof of a PoC)
- https://hackmd.io/@leediay/multiple-vuln-trudesk-1211 CVE record · VulnCheck · Updated 2026-10-21T12:39:54.187Z
CVE record · CISA-ADP · Updated 2026-10-21T19:57:13.714Z
NVD · CVE-2026-114401 · Updated 2026-10-22T15:44:59.783
Advisories
- https://www.vulncheck.com/advisories/trudesk-through-1.2.11-username-enumeration-via-regex-injection-in-api-v1-login CVE record · VulnCheck · Updated 2026-10-21T12:39:54.187Z
NVD · CVE-2026-114401 · Updated 2026-10-22T15:44:59.783 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-107248 EUVD · EUVD-2026-107248
Technical & other
- https://github.com/polonel/trudesk/blob/v1.2.11/src/models/user.js#L310-L319 CVE record · VulnCheck · Updated 2026-10-21T12:39:54.187Z
NVD · CVE-2026-114401 · Updated 2026-10-22T15:44:59.783 - https://github.com/polonel/trudesk/blob/v1.2.11/src/controllers/api/v1/common.js#L45-L65 CVE record · VulnCheck · Updated 2026-10-21T12:39:54.187Z
NVD · CVE-2026-114401 · Updated 2026-10-22T15:44:59.783 - https://github.com/polonel/trudesk CVE record · VulnCheck · Updated 2026-10-21T12:39:54.187Z
NVD · CVE-2026-114401 · Updated 2026-10-22T15:44:59.783