Missing Authorization Vulnerability in Peppermint by Peppermint Lab
CVE-2026-111353

5.3MEDIUM

Key Information:

Vendor

Peppermint-lab

Status
Peppermint
Vendor
CVE Published:
15 October 2026

What is CVE-2026-111353?

A missing authorization vulnerability in Peppermint versions up to 0.5.5 allows authenticated users to create time entries and upload attachments under other users' identities. By manipulating the user ID in the request body, attackers can send POST requests to the time and storage endpoints, compromising the integrity of ticket-related data and potentially leading to unauthorized access and misuse. This exposes sensitive information and undermines user trust in the affected application.

Affected Version(s)

peppermint 0 <= 0.5.5

References

https://hackmd.io/@hieuPenguinnn/peppermint-data-logs-mis...
third-party-advisory
https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/a...
technical-description
https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/a...
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

hieuPenguinnn
.