GHSA-9g2q-w3w2-vf7q: Kimai has Missing Voter Check that Allows Cross-Team Timesheet Manipulation

May 6, 2026

Any ROLE_TEAMLEAD user can enumerate, read, modify, and permanently delete timesheets belonging to any other user in the system — regardless of team membership. This enables data destruction (deleted billable hours), data tampering (forged timesheet durations), and full authorization bypass on timesheet resources. Verified against Kimai 2.52.0.

References

github.com/advisories/GHSA-9g2q-w3w2-vf7q
github.com/kimai/kimai
github.com/kimai/kimai/security/advisories/GHSA-9g2q-w3w2-vf7q

Code Behaviors & Features

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