Vulnerability · Published Sep 15, 2026 · Assigned by GitHub_M
CVE-2026-52825Kimai: Improper Authorization in Kimai Team Member and Team Activity Assignment APIs Allows Expansion of Team Scope Beyond Authorized Visibility
Medium 5.3
In plain English
A medium-severity missing authorization in kimai from kimai. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | kimai/kimai | 2.58.0 | GHSA-xv4r-4885-gwpg |
Affected products (as reported)
Weakness: CWE-285, CWE-862 · Vector: 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
References
- https://github.com/kimai/kimai/security/advisories/GHSA-xv4r-4885-gwpg x_refsource_CONFIRM
- https://github.com/kimai/kimai/pull/5952 x_refsource_MISC
- https://github.com/kimai/kimai/commit/31a8f887a5cda517db7b4320a7ad997c87d08601 x_refsource_MISC
- https://github.com/kimai/kimai/releases/tag/2.58.0 x_refsource_MISC
- https://www.kimai.org/en/security/ghsa-xv4r-4885-gwpg x_refsource_MISC