Auth bypass in Peppermint-Lab Peppermint
CVE-2026-111353
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/peppermint-data-logs-missing-authorization (third-party-advisory)
- github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/controllers/time.ts (technical-description)
- github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/controllers/storag… (technical-description)
- github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/main.ts (technical-description)
- www.vulncheck.com/advisories/peppermint-through-0.5.5-missing-authorization-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111353?
- CVE-2026-111353 is a medium-severity vulnerability in Peppermint-Lab Peppermint, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-15.
- How severe is CVE-2026-111353?
- Medium severity. CVSS v3 base score is 4.3 out of 10.