Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck

CVE-2026-111353Peppermint through 0.5.5 Missing Authorization via Time-Tracking and Attachment Upload Endpoints

Medium 4.3

In plain English

A medium-severity missing authorization in peppermint from Peppermint-Lab. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 77.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Peppermint-Lab	peppermint	0 – through 0.5.5

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://hackmd.io/@hieuPenguinnn/peppermint-data-logs-missing-authorization third-party-advisory
https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/controllers/time.ts#L6-L27 technical-description
https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/controllers/storage.ts#L9-L35 technical-description
https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/main.ts#L57-L70 technical-description
VulnCheck Advisory: Peppermint through 0.5.5 Missing Authorization via Time-Tracking and Attachment Upload Endpoints third-party-advisory