---
cve: "CVE-2026-82043"
severity: "MEDIUM"
cvss: 6.9
epss: "0.3%"
vendor: "UTMStack"
kev: false
exploited: false
published: "2026-10-02 21:16:56"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-05T05:16:09+02:00"
---

# CVE-2026-82043

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.

## CNA-Record (Kanon, cvelistV5)

- CNA: **VulnCheck**
- State: PUBLISHED
- Stand: 2026-10-04 14:59:47
- 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`)

## 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 |

## Patch verfügbar (OSV)

- a310ff00d4f699cf0ae687573f43b69ad9906cdb (Commit)
- 4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd (Commit)

## Referenzen

- <https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16>
- <https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd>
- <https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-82043) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_