CVE-2026-85391
CVSS v3
9.8
CRITICAL
EPSS Score
0.6 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2026-09-03
- Last Modified
- 2026-09-03
Frequently asked questions
What is 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.
Is CVE-2026-85391 actively exploited?
Active exploitation of CVE-2026-85391 has not been confirmed. Its EPSS score was 0.6% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-85391?
CVE-2026-85391 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2026-85391 affecting your environment?
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