What is CVE-2026-46392?

CVE-2026-46392 is a high-severity vulnerability in Haxtheweb Haxcms-php, classified under Improper Handling of Case Sensitivity. CVSS score: 8.7/10. Published 2026-06-05.

How severe is CVE-2026-46392?

High severity. CVSS v3 base score is 8.7 out of 10.

Arbitrary file upload in Haxtheweb Haxcms-php

CVE-2026-46392

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0 of HAX CMS PHP, the `saveFile` endpoint validates upload extensions case-insensitively and writes the filename to disk verbatim, but the `.htacces…

EPSS: 0.002 (12.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Haxtheweb Haxcms-php — versions < 26.0.0

Weakness classification (CWE)

CWE-178 — Improper Handling of Case Sensitivity
CWE-434 — Unrestricted Upload of File with Dangerous Type

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-46392?: CVE-2026-46392 is a high-severity vulnerability in Haxtheweb Haxcms-php, classified under Improper Handling of Case Sensitivity. CVSS score: 8.7/10. Published 2026-06-05.
How severe is CVE-2026-46392?: High severity. CVSS v3 base score is 8.7 out of 10.