---
id: CVE-2026-52826
title: Kimai is an open-source time tracking application
summary: >-
  Kimai is an open-source time tracking application. Prior to 2.57.0, GET or
  POST requests to /en/admin/project/{id}/rate/{rate},
  /en/admin/customer/{id}/rate/{rate}, and /en/admin/activity/{id}/rate/{rate}
  independently resolve the author…
severity: medium
cvss: 5.3
cvssVector: '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'
cwe:
  - CWE-285
  - CWE-639
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-2026-52826'
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-2xgg-2x8h-8xw4'
    label: security-advisories@github.com
  - url: 'https://www.kimai.org/en/security/ghsa-2xgg-2x8h-8xw4'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-2xgg-2x8h-8xw4'
tags:
  - nvd
  - cve.org
  - ghsa
  - composer
epss: 0.00257
epssPercentile: 0.17667
aliases:
  - GHSA-2xgg-2x8h-8xw4
ecosystem: composer
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T12:41:07.654519Z'
cvssSource: cna
ingestedAt: '2026-07-14T00:31:48.440Z'
---

## Overview

Kimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/project/{id}/rate/{rate}, /en/admin/customer/{id}/rate/{rate}, and /en/admin/activity/{id}/rate/{rate} independently resolve the authorized parent identifier and the attacker-selected child rate identifier without confirming that the ProjectRate, CustomerRate, or ActivityRate belongs to that parent. An authenticated user who can edit one parent object can pair it with a rate record from an unauthorized project, customer, or activity and persist changes to billing configuration in kimai2_projects_rates, kimai2_customers_rates, or kimai2_activities_rates. 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-2026-52826)

Affected packages:

- `kimai/kimai <= 2.56.0`

Patched in:

- `kimai/kimai 2.57.0`

Source: https://github.com/advisories/GHSA-2xgg-2x8h-8xw4