Vulnerability · Published Sep 2, 2026 · Assigned by VulnCheck
CVE-2026-84808Kimai before 2.65.0 Authorization Bypass via API Timesheet
Medium 4.3
In plain English
A medium-severity incorrect authorization in kimai from kimai. There are no confirmed reports of exploitation so far. 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 76.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Kimai versions before 2.65.0 contain an authorization bypass vulnerability in the REST API timesheet collection endpoint that fails to enforce activity-team access controls. Users with view_other_timesheet permission can list timesheets using activities restricted to teams they do not belong to, bypassing intended data isolation.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-c6j4-35fc-x3hw) vendor-advisory
- VulnCheck Advisory: Kimai before 2.65.0 Authorization Bypass via API Timesheet third-party-advisory