TI-2026-58600 Aliases CVE-2026-85392 GHSA-r5f6-fc86-75rh

Peppermint through 0.5.5 Authorization Bypass on the User Logout Endpoint

LOW 24CWE-639Published 2026-09-03 · Updated 2026-09-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00455 39th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Peppermint-Lab	peppermint	up to 0.5.5	—	No fix listed	CNA

peppermint VendorPeppermint-Lab Affected up to 0.5.5 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-85392
2026-10-03 Alias added: GHSA-r5f6-fc86-75rh

References

Other 3

TI-2026-75087 Missing authorization in Peppermint lets users act as other users CVSS 4.0MEDIUM 5.3
TI-2026-58599 Peppermint through 0.5.5 Use of Hard-coded JWT Signing Secret in docker-compose.yml CVSS 4.0CRITICAL 9.3
TI-2026-50820 Peppermint Lab Peppermint - Broken Access Control CVSS 3.1HIGH 8.8
TI-2026-50814 Peppermint Lab Peppermint - Broken Access Control CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences