CVE-2026-52819Medium· 6.3▾ TwilightPoC availableKimai is an open-source time tracking application. Prior to 2.57.0, the GET /api/timesheets list endpoint accepts user and users[] target identifiers from a caller with view_other_timesheet but does not apply access_user or verify that a…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 34.7 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
— → 6.3
Exploit / PoC code exists
Kimai is an open-source time tracking application. Prior to 2.57.0, the GET /api/timesheets list endpoint accepts user and users[] target identifiers from a caller with view_other_timesheet but does not apply access_user or verify that a ROLE_TEAMLEAD requester leads a team containing each target user. TimesheetController::cgetAction() adds the resolved users directly to the query while project and customer filtering still permits records on unscoped projects or projects sharing ordinary team membership, allowing a teamlead to retrieve another user's descriptions, timing data, tags, rate, and internalRate even though GET /api/timesheets/{id} would deny access through TimesheetVoter. This issue is fixed in version 2.57.0.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
kimai/kimai <= 2.56.0Patched in:
kimai/kimai 2.57.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-52820Medium· 5.3Kimai is an open-source time tracking application
CVE-2026-52821Medium· 5.3Kimai is an open-source time tracking application
CVE-2026-52826Medium· 5.3Kimai is an open-source time tracking application
CVE-2026-52824Critical· 9.1Kimai is an open-source time tracking application
CVE-2026-49865Medium· 5.3Kimai is an open-source time tracking application
CVE-2026-52827High· 7.1Kimai is an open-source time tracking application