What is CVE-2026-80197?

CVE-2026-80197 is a medium-severity vulnerability in Kimai, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-25.

How severe is CVE-2026-80197?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Kimai

CVE-2026-80197

Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their timesheet identifier, enabling cross-user business-state tampering without administrative privileges.

Vulnerability class: IDOR (Insecure Direct Object Reference)

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.

Affected products

Kimai

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

GitHub Security Advisory (GHSA-j5mc-p8qg-39j7) (vendor-advisory)
VulnCheck Advisory: Kimai before 2.57.0 Improper Authorization via Favorite Endpoints (third-party-advisory)

Frequently asked questions

What is CVE-2026-80197?: CVE-2026-80197 is a medium-severity vulnerability in Kimai, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-25.
How severe is CVE-2026-80197?: Medium severity. CVSS v3 base score is 4.3 out of 10.