CVE-2026-85392: Peppermint-Lab Peppermint

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Peppermint through 0.5.5 contains an authorization bypass vulnerability in the GET /api/v1/auth/user/:id/logout endpoint that allows authenticated attackers to delete sessions for any user by supplying arbitrary user IDs. Attackers can forcibly log out any user including administrators by calling the logout handler with another user's ID, since the endpoint performs no authorization checks to verify the caller owns the target account.

Affected products

• Peppermint-Lab Peppermint: up to and including 0.5.5

Published 2026-09-03. Last modified 2026-09-09.