CVE-2026-46400: high-severity vulnerability in haxtheweb haxcms-php
HAXCMS PHP has a File Upload Validation Bypass
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.4%
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.
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
Affected products
haxtheweb · haxcms-phpRelated CVEs — haxtheweb haxcms-php
In the same product, most dangerous first.
CVE-2026-46394HIGHHAX CMS Vulnerable to Command Injection using Git.phpEPSS 0.8%CVE-2026-46390MEDIUMHAX CMS has Unauthenticated Git Access via User-Controlled KeyEPSS 0.3%CVE-2026-46399CRITICALAuthenticated Remote Code Execution via File OverwriteEPSS 0.3%CVE-2026-46397MEDIUMhaxcms-php Local File Inclusion via saveOutline API Location Parameter v2.0EPSS 0.3%CVE-2026-46493HIGHhaxtheweb/haxcms-php uses insecure method for generating saltEPSS 0.3%CVE-2026-46511HIGHHAXcms: Mass Token Exfiltration and Cross-Tenant HijackEPSS 0.3%