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CVE-2025-66686

6.1 · MEDIUM

A stored Cross-Site Scripting (XSS) vulnerability exists in Perch CMS version 3.2.

Published Jan 7, 2026CWE-79EPSS 0.22%

Overview

CVE-2025-66686 is a medium-severity vulnerability. It was published on January 7, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A stored Cross-Site Scripting (XSS) vulnerability exists in Perch CMS version 3.2. An authenticated attacker with administrative privileges can inject malicious JavaScript code into the “Help button url” setting within the admin panel. The injected payload is stored and executed when any authenticated user clicks the Help button, potentially leading to session hijacking, information disclosure, privilege escalation, and unauthorized administrative actions.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/mertdurum06/Perch-v3.2GitHubgithub.com/mertdurum06/Perch-v3.2/blob/main/Perch%20v3.2_Poc.txt

How CyberStrike helps

Frequently asked questions

What is CVE-2025-66686?

CVE-2025-66686 is a medium-severity vulnerability. It was published on January 7, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2025-66686?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-66686?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-66686?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-66686 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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