---
cve: "CVE-2026-114401"
severity: "MEDIUM"
cvss: 6.9
epss: "0.4%"
vendor: "polonel"
kev: false
exploited: false
published: "2026-10-21 12:39:54"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-28T22:31:46+01:00"
---

# CVE-2026-114401

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-21 19:57:13
- CNA-CVSS: **6.9** (`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`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Schwachstellen-Klasse

- **CWE-943** — Improper Neutralization of Special Elements in Data Query Logic
  The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.

## Angriffsmuster (CAPEC)

- [CAPEC-676 — NoSQL Injection](https://capec.mitre.org/data/definitions/676.html) _(Severity: High)_

## Referenzen

- <https://hackmd.io/@leediay/multiple-vuln-trudesk-1211>
- <https://github.com/polonel/trudesk/blob/v1.2.11/src/models/user.js#L310-L319>
- <https://github.com/polonel/trudesk/blob/v1.2.11/src/controllers/api/v1/common.js#L45-L65>
- <https://github.com/polonel/trudesk>
- <https://www.vulncheck.com/advisories/trudesk-through-1.2.11-username-enumeration-via-regex-injection-in-api-v1-login>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-114401/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_