Checkmk up to 2.2.0/2.3.0p50/2.4.0p37/2.5.0p14 Setup reset_url redirect

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Checkmk up to 2.2.0/2.3.0p50/2.4.0p37/2.5.0p14. Impacted is an unknown function of the component Setup. This manipulation of the argument reset_url causes redirect. This vulnerability is handled as CVE-2026-14452. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Checkmk up to 2.2.0/2.3.0p50/2.4.0p37/2.5.0p14. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Setup. The manipulation of the argument reset_url with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect integrity. The summary by CVE is:

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.

The advisory is shared at checkmk.com. This vulnerability is known as CVE-2026-14452 since 07/02/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1204.001 for this issue.

Upgrading to version 2.3.0p51, 2.4.0p38 or 2.5.0p15 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-102834). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Checkmk

Version

• 2.0
• 2.1
• 2.2.0
• 2.3.0p50
• 2.4.0p37
• 2.5.0p14

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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