CVE-2025-54414

Description

Anubis is a Web AI Firewall Utility that weighs the soul of users' connections using one or more challenges in order to protect upstream resources from scraper bots. In versions 1.21.2 and below, attackers can craft malicious pass-challenge pages that cause a user to execute arbitrary JavaScript code or trigger other nonstandard schemes. An incomplete version of this fix was tagged at 1.21.2 and then the release process was aborted upon final testing. To work around this issue: block any requests to the /.within.website/x/cmd/anubis/api/pass-challenge route with the ?redir= parameter set to anything that doesn't start with the URL scheme http, https, or no scheme (local path redirect). This was fixed in version 1.21.3.

Reserved 2025-07-21 | Published 2025-07-26 | Updated 2025-07-26 | Assigner GitHub_M

Problem types

CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Product status

< 1.21.3
affected

References

github.com/...anubis/security/advisories/GHSA-jhjj-2g64-px7c

github.com/TecharoHQ/anubis/pull/904

github.com/TecharoHQ/anubis/releases/tag/v1.21.3

cve.org (CVE-2025-54414)

nvd.nist.gov (CVE-2025-54414)

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