Kyverno up to 2.5.1 isURL results[] cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in Kyverno up to 2.5.1. Affected by this vulnerability is the function isURL. The manipulation of the argument results[] results in cross site scripting. This vulnerability is reported as CVE-2026-44245. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Kyverno up to 2.5.1. It has been classified as problematic. Affected is the function isURL. The manipulation of the argument results[] with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to 2.5.2, Vue 3's v-html directive is the framework-documented mechanism for injecting raw HTML, and it intentionally disables the auto-escaping that {{ }} interpolation provides. The PropertyCard.vue component uses v-html for the else branch of the URL check, meaning any non-URL string value flows directly into the DOM as HTML. The isURL() guard only filters values that parse as http: or https: URLs, so any HTML payload not starting with those schemes bypasses it entirely. The data originates from Kubernetes PolicyReport .results[].properties fields, which are arbitrary string maps populated by policy engines and potentially by any principal with write access to PolicyReport objects in the cluster. This vulnerability is fixed in 2.5.2.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-44245 since 05/05/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 2.5.2 eliminates this vulnerability.

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Productinfo

Name

• Kyverno

Version

• 2.5.0
• 2.5.1

Website

• Product: https://github.com/kyverno/kyverno/

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