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TI-2026-75087 Aliases CVE-2026-111353

Missing authorization in Peppermint lets users act as other users

Priority MEDIUM 57CWE-862Published · Updated

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 · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Peppermint through 0.5.5 from Peppermint-Lab lacks authorization checks (CWE-862). Any authenticated user with low privileges can create time entries and file attachments as another user by supplying a user id in the request body, attaching records to any ticket under a different identity. The attack is remote and needs no user interaction, and the impact is limited to integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Peppermint through 0.5.5 contains a missing authorization vulnerability that allows any authenticated user to create time entries and attachments as other users by supplying a user id in the request body. Attackers can send POST requests to /api/v1/time/new or /api/v1/storage/ticket/:id/upload/single to attach files and time records to any ticket under another user's identity.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd 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
Poc
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

VendorProductAffected versionsFixed inStatusSource
Peppermint-Labpeppermintup to 0.5.5—No fix listedCNA
  • peppermint VendorPeppermint-Lab Affected up to 0.5.5 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for peppermint.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111353
  2. 2026-10-21 CISA SSVC decision points changed
  3. 2026-10-21 Priority changed: LOW → MEDIUM

References

Advisory 1

Other 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
  • TI-2026-58600 Peppermint through 0.5.5 Authorization Bypass on the User Logout Endpoint CVSS 4.0MEDIUM 5.3

Sources

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