---
cve: "CVE-2026-85391"
severity: "CRITICAL"
cvss: 9.3
epss: "0.6%"
vendor: "Peppermint-Lab"
kev: false
exploited: false
published: "2026-09-03 19:17:30"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-08T01:23:09+02:00"
---

# CVE-2026-85391

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

Peppermint through 0.5.5 contains a hardcoded JWT signing secret in docker-compose.yml that allows unauthenticated attackers to forge session tokens for any account. Attackers can use the published secret to mint valid tokens for arbitrary user IDs and access protected endpoints without credentials.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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)

- 71ae71ba78e1d605bc4b178342710cc7f1dc3714 (Commit)

## Referenzen

- <https://github.com/Peppermint-Lab/peppermint/issues/528>
- <https://github.com/Peppermint-Lab/peppermint>
- <https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/docker-compose.yml>
- <https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/lib/jwt.ts>
- <https://www.vulncheck.com/advisories/peppermint-through-0.5.5-use-of-hard-coded-jwt-signing-secret-in-docker-compose-yml>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-85391/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_