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CVE-2025-66459

6.1 · MEDIUM

Lookyloo is a web interface that allows users to capture a website page and then display a tree of domains that call each other.

Published Dec 2, 2025CWE-79EPSS 0.31%

Overview

CVE-2025-66459 is a medium-severity vulnerability. It was published on December 2, 2025 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

Lookyloo is a web interface that allows users to capture a website page and then display a tree of domains that call each other. Prior to 1.35.3, a XSS vulnerability can be triggered when a user submits a list of URLs to capture, one of them contains a HTML element, and the capture fails. Then, the error field is populated with an error message that contains the bad URL they tried to capture, triggering the XSS. This vulnerability is fixed in 1.35.3.

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/Lookyloo/lookyloo/commit/1850a34b8cec52438df3b544295b20cfa35f8ad1GitHubgithub.com/Lookyloo/lookyloo/commit/8c3ab96de44c1ce15646d734aa06faf884329116GitHubgithub.com/Lookyloo/lookyloo/commit/95cdc00fe37fd89790fa89bb3ee3fefa2da38442GitHubgithub.com/Lookyloo/lookyloo/security/advisories/GHSA-hvmh-j2jx-48wg

How CyberStrike helps

Frequently asked questions

What is CVE-2025-66459?

CVE-2025-66459 is a medium-severity vulnerability. It was published on December 2, 2025 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2025-66459?

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-2025-66459?

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-2025-66459?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-66459 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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