CVE-2026-85391
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability51. percentile0.6%
ProductPeppermint
PublishedSep 3, 2026
First seenSep 3, 2026
Weakness typeCWE-798Hard-coded credentials
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Peppermint-Lab peppermint | v ≤ 0.5.5 | — |
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