Medium 5.3Published Sep 15, 2026

CVE-2026-52823Kimai: Login CSRF in Kimai Timesheet Stop and Restart API Endpoints Allows Unauthorized State Changes

Updated under an hour ago (2026-10-19 08:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for kimai

Exploited in the last 30 days

Kimai is an open-source time tracking application. Prior to 2.58.0, TimesheetController exposes GET /api/timesheets/{id}/stop and GET /api/timesheets/{id}/restart, which reuse an authenticated browser session and perform state-changing operations through GET requests without a request-forgery defense. A remote attacker can cause a logged-in user to request either route from attacker-controlled content, stopping a running timesheet or restarting a historical entry to create and start a new timesheet without the user's consent. The unauthorized changes can corrupt time records, billing, reports, approvals, and audits. 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-352
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-r8vr-m544-qh4hx-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-r8vr-m544-qh4hx-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.