CVE-2026-80202

CVSS 9.3 (critical) · published 2026-08-26

Kimai before 2.56.0 does not enforce team-membership checks in TimesheetVoter::voteOnAttribute(), which maps permissions only to own_timesheet or other_timesheet. As a result, any authenticated user with ROLE_TEAMLEAD (or a role holding edit_other_timesheet/delete_other_timesheet) can read, modify, and permanently delete timesheets belonging to any user system-wide via the API, regardless of team membership. Timesheet IDs are sequential integers and trivially enumerable. ROLE_USER accounts are correctly restricted. (Note: the maintainers characterize this behavior as matching the documented permission model.)

Weakness: CWE-863

Source: NVD CVE-2026-80202

References

• https://github.com/kimai/kimai/security/advisories/GHSA-9g2q-w3w2-vf7q
• https://www.vulncheck.com/advisories/kimai-before-2.56.0-authorization-bypass-via-timesheetvoter
• https://github.com/kimai/kimai/security/advisories/GHSA-9g2q-w3w2-vf7q

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