CVE-2025-66459
BaseFortify
Publication date: 2025-12-02
Last updated on: 2025-12-05
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| lookyloo | lookyloo | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Cross-Site Scripting (XSS) issue in Lookyloo versions prior to 1.35.3. It occurs when a user submits a list of URLs to capture, and one of the URLs contains an HTML element that causes the capture to fail. The error message then includes the problematic URL, which can trigger the XSS vulnerability by injecting malicious code into the error field.
How can this vulnerability impact me? :
The XSS vulnerability can allow an attacker to execute malicious scripts in the context of the user's browser when they view the error message. This can lead to unauthorized actions, data theft, or session hijacking, depending on how the application and user interact with the malicious script.
What immediate steps should I take to mitigate this vulnerability?
Upgrade Lookyloo to version 1.35.3 or later, as this version contains the fix for the XSS vulnerability.