---
id: CVE-2026-14452
title: Open redirect and XSS via reset_url parameter
summary: >-
  Improper validation of the reset_url parameter of the Setup in-page search in
  Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an attacker to
  execute arbitrary script in the session of an authenticated user with Setup
  acces…
severity: high
cvss: 8.6
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N'
cvssSource: cna
cwe:
  - CWE-601
vendor: Checkmk GmbH
product: Checkmk
affected:
  - Checkmk >= 2.5.0 < 2.5.0p15
  - Checkmk >= 2.4.0 < 2.4.0p38
  - Checkmk >= 2.3.0 < 2.3.0p51
  - Checkmk 2.2.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T10:40:05.386910Z'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T10:40:17.160Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-14452'
references:
  - url: 'https://checkmk.com/werk/22314'
tags:
  - cve.org
ingestedAt: '2026-10-16T10:04:12.089Z'
---

## Overview

Improper validation of the reset_url parameter of the Setup in-page search in Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an attacker to execute arbitrary script in the session of an authenticated user with Setup access, or to redirect that user to an arbitrary external site, by tricking the user into opening a crafted URL and clicking the Reset button or submitting an empty search.

## Affected

- `Checkmk >= 2.5.0 < 2.5.0p15`
- `Checkmk >= 2.4.0 < 2.4.0p38`
- `Checkmk >= 2.3.0 < 2.3.0p51`
- `Checkmk 2.2.0`

## Remediation

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