Is CVE-2026-85391 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-85391?

CVE-2026-85391 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-85391

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.