Improper Authorization Vulnerability in Kimai Product by Kimai
CVE-2026-80197

8.7HIGH

Key Information:

Vendor

Kimai

Status
Kimai
Vendor
CVE Published:
25 August 2026

What is CVE-2026-80197?

Kimai prior to version 2.57.0 has a security flaw involving improper authorization in its favorite timesheet functionalities. This vulnerability allows authenticated users to interfere with other users' bookmark settings by using their respective timesheet identifiers. Consequently, attackers can add or remove timesheet entries from another user's favorites list without requiring administrative permissions, leading to potential cross-user tampering of business states.

Affected Version(s)

kimai 0 < 2.57.0

kimai 2.57.0

References

https://github.com/kimai/kimai/security/advisories/GHSA-j...
vendor-advisory
https://www.vulncheck.com/advisories/kimai-before-2.57.0-...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mitchell45
.