Medium 5.3Published Sep 15, 2026

CVE-2026-52822Kimai: Improper Authorization in Kimai Timesheet Restart and Duplicate Allows New Timesheets After Project Access Revocation

Updated under an hour ago (2026-10-19 08:50 UTC)

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Exploited in the last 30 days

Kimai is an open-source time tracking application. Prior to 2.58.0, PATCH /api/timesheets/{id}/restart, PATCH /api/timesheets/{id}/duplicate, and the web duplicate workflow can derive a new record from an owned historical timesheet after the user's access to its project or activity has been revoked. TimesheetVoter evaluates the own-timesheet permission before current team access, and its canStart() logic validates object visibility but does not verify the user's current team access to the referenced project and activity. An old entry therefore acts as a persistent capability to create new time records under an unauthorized project and activity, corrupting budgets, statistics, reports, and invoices after an administrative revocation. This issue is fixed in version 2.58.0.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-285, CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

kimai kimai kimai:kimai (from the name)	before 2.58.0	CNA record

References

https://github.com/kimai/kimai/security/advisories/GHSA-c6w6-57jj-62vhx-refsource-confirm
https://github.com/kimai/kimai/pull/5952x-refsource-misc
https://github.com/kimai/kimai/commit/31a8f887a5cda517db7b4320a7ad997c87d08601x-refsource-misc
https://github.com/kimai/kimai/releases/tag/2.58.0x-refsource-misc
https://www.kimai.org/en/security/ghsa-c6w6-57jj-62vhx-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.