Medium 5.3Published Sep 15, 2026

CVE-2026-52825Kimai: Improper Authorization in Kimai Team Member and Team Activity Assignment APIs Allows Expansion of Team Scope Beyond Authorized Visibility

Updated under an hour ago (2026-10-19 11:10 UTC)

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Exploited in the last 30 days

Kimai is an open-source time tracking application. Prior to 2.58.0, POST /api/teams/{id}/members/{userId} and POST /api/teams/{id}/activities/{activityId} verify that a teamlead may edit the Team but do not verify access_user for the referenced User or view access for the referenced Activity. A teamlead can add users or activities outside the teamlead's manageable scope to an editable team, bypassing the narrower choices enforced by TeamEditForm and UserRepository::getQueryBuilderForFormType(). The resulting relationships can be trusted by RolePermissionManager::checkTeamAccessActivity() and other team-based authorization, visibility, reporting, and workflow logic. 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-xv4r-4885-gwpgx-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-xv4r-4885-gwpgx-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.