CVE-2026-46400

HIGH

HAX CMS PHP 11.0.6-24.x File Upload - Validation Bypass

Title source: manual
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v4 8.7
EPSS 0.0039
EPSS Percentile 30.2%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-434
Status published
Products (1)
haxtheweb/haxcms-php >= 11.0.6, < 25.0.0
Published Jun 05, 2026
Tracked Since Jun 06, 2026