CVE-2026-85391
criticalPeppermint through 0.5.5 contains a hardcoded JWT signing secret in docker-compose.yml that allows unauthenticated attackers to forge session tokens for any ac…
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
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-03 19:17
Modified: 2026-09-09 20:20
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 06:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/Peppermint-Lab/peppermint disclosure@vulncheck.com
- https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/lib/jwt.ts disclosure@vulncheck.com
- https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/docker-compose.yml disclosure@vulncheck.com
- https://github.com/Peppermint-Lab/peppermint/issues/528 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/peppermint-through-0.5.5-use-of-hard-coded-jwt-signin... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗