CVE-2025-64716
Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-11-13

Last updated on: 2025-11-13

Assigner: GitHub, Inc.

Description
Anubis is a Web AI Firewall Utility that challenges users' connections in order to protect upstream resources from scraper bots. Prior to version 1.23.0, when using subrequest authentication, Anubis did not perform validation of the redirect URL and redirects user to any URL scheme. While most modern browsers do not allow a redirect to `javascript:` URLs, it could still trigger dangerous behavior in some cases. Anybody with a subrequest authentication may be affected. Version 1.23.0 contains a fix for the issue.

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Meta Information

Published
2025-11-13
Last Modified
2025-11-13
Generated
2026-07-06
AI Q&A
2025-11-13
EPSS Evaluated
2026-07-05
NVD
CVE-2025-64716

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
anubis anubis *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-601 The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
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

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Executive Summary

This vulnerability in Anubis Web AI Firewall Utility occurs because, prior to version 1.23.0, when using subrequest authentication, the software did not validate the redirect URL properly. This allowed redirects to any URL scheme, including potentially dangerous ones like 'javascript:'. Although most modern browsers block such redirects, in some cases this could still trigger harmful behavior. The issue was fixed in version 1.23.0.

Impact Analysis

If you use Anubis with subrequest authentication, this vulnerability could allow an attacker to redirect users to malicious URLs, potentially leading to security risks such as executing harmful scripts or phishing attacks. This could compromise user security and trust.

Mitigation Strategies

Upgrade Anubis to version 1.23.0 or later, as this version contains a fix that properly validates redirect URLs in subrequest authentication to prevent unsafe redirects.

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