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CVE-2026-52822

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

MEDIUM
5.3
CVSS Score
Published: September 15, 2026 at 10:44 AM UTC
Updated: September 23, 2026 at 06:40 PM UTC
1 product affected across 1 vendorKimai

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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can derive a new record from an owned historical timesheet after the user's access to its project or activity has been revoked.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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Kimai· Kimai
60%
v < 2.58.0
Affected range stops below 2.58.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

x_refsource_CONFIRM
Source: cverecord
https://github.com/kimai/kimai/security/advisories/GHSA-c6w6-57jj-62vh
x_refsource_MISC
Source: cverecord
https://github.com/kimai/kimai/pull/5952
x_refsource_MISC
Source: cverecord
https://github.com/kimai/kimai/commit/31a8f887a5cda517db7b4320a7ad997c87d08601
x_refsource_MISC
Source: cverecord
https://github.com/kimai/kimai/releases/tag/2.58.0
x_refsource_MISC
Source: cverecord
https://www.kimai.org/en/security/ghsa-c6w6-57jj-62vh

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-285CWE-862

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