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Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 11.0.6 and prior to version 25.0.0, the file upload functionality in HAXCMS PHP only validates file extensions using a regex pattern without checking the actual file content or MIME type. This allows attackers to upload malicious files (e.g., PHP webshells) disguised as legitimate image files, potentially leading to remote code execution. Version 25.0.0 contains a fix for the issue.

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




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-434: Unrestricted Upload of File with Dangerous Type

Product status

>= 11.0.6, < 25.0.0
affected

References

github.com/...issues/security/advisories/GHSA-ffxv-9qv2-v2v8 exploit

github.com/...issues/security/advisories/GHSA-ffxv-9qv2-v2v8

cve.org (CVE-2026-46400)

nvd.nist.gov (CVE-2026-46400)

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