Vulnerability Description
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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/Peppermint-Lab/peppermint
- https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/lib/jwt.ts
- https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/docker-compose.yml
- https://github.com/Peppermint-Lab/peppermint/issues/528
- https://www.vulncheck.com/advisories/peppermint-through-0.5.5-use-of-hard-coded-
FAQ
What is CVE-2026-85391?
CVE-2026-85391 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 se...
How severe is CVE-2026-85391?
CVE-2026-85391 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-85391?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.