CVE-2026-46391

Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 9.0.1 and prior to version 26.0.0 of @haxtheweb/open-apis, multiple functions conduct substring-only matching to validate hostnames to which basic authorization should be sent. An attacker can append the matched substrings to an attacker-controlled endpoint and capture authentication. Version 26.0.0 fixes the issue.

PUBLISHED Reserved 2026-05-13 | Published 2026-06-05 | Updated 2026-06-08 | Assigner GitHub_M

Problem types

CWE-183: Permissive List of Allowed Inputs

CWE-918: Server-Side Request Forgery (SSRF)

Product status

References

github.com/...issues/security/advisories/GHSA-4fg7-f244-3j49 exploit

github.com/...issues/security/advisories/GHSA-4fg7-f244-3j49

cve.org (CVE-2026-46391)

nvd.nist.gov (CVE-2026-46391)

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