---
id: CVE-2026-52819
title: Kimai is an open-source time tracking application
summary: >-
  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…
severity: medium
cvss: 6.3
cvssVector: '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
vendor: kimai
product: kimai
affected:
  - kimai < 2.57.0
patched:
  - kimai/kimai 2.57.0
published: '2026-09-15'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:22:16.503'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52819'
references:
  - url: >-
      https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849
    label: security-advisories@github.com
  - url: 'https://github.com/kimai/kimai/pull/5929'
    label: security-advisories@github.com
  - url: 'https://github.com/kimai/kimai/releases/tag/2.57.0'
    label: security-advisories@github.com
  - url: 'https://github.com/kimai/kimai/security/advisories/GHSA-4m8q-55qv-9pwp'
    label: security-advisories@github.com
  - url: 'https://www.kimai.org/en/security/ghsa-4m8q-55qv-9pwp'
    label: security-advisories@github.com
  - url: 'https://github.com/kimai/kimai/security/advisories/GHSA-4m8q-55qv-9pwp'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-4m8q-55qv-9pwp'
tags:
  - nvd
  - cve.org
  - ghsa
  - composer
  - exploit-available
epss: 0.00372
epssPercentile: 0.3114
aliases:
  - GHSA-4m8q-55qv-9pwp
ecosystem: composer
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T15:11:18.450514Z'
cvssSource: cna
ingestedAt: '2026-07-14T00:31:48.579Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-52819)

Affected packages:

- `kimai/kimai <= 2.56.0`

Patched in:

- `kimai/kimai 2.57.0`

Source: https://github.com/advisories/GHSA-4m8q-55qv-9pwp