# CVE-2026-52819

## Summary

- **CVE ID:** CVE-2026-52819
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-863
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

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.

## Affected Products

- kimai — kimai (< 2.57.0)

## References

- [CNA](https://github.com/kimai/kimai/security/advisories/GHSA-4m8q-55qv-9pwp)
- [CNA](https://github.com/kimai/kimai/pull/5929)
- [CNA](https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849)
- [CNA](https://github.com/kimai/kimai/releases/tag/2.57.0)
- [CNA](https://www.kimai.org/en/security/ghsa-4m8q-55qv-9pwp)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.37%
- **EPSS Percentile:** 31.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._