CVE-2026-85391

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.

  • Published Sep 3, 2026
  • CVSS 9.3 critical
  • 0.6% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-85391 at the National Vulnerability Database