CVE-2026-46399 PUBLISHED

Authenticated Remote Code Execution via File Overwrite

Assigner: GitHub_M
Reserved: 13.05.2026 Published: 05.06.2026 Updated: 05.06.2026

HAX CMS helps manage microsite universe with PHP or NodeJs backends. The PHP version of HAX CMS prior to version 26.0.0 has an authenticated file overwrite vulnerability. An attacker can exploit this vulnerability to configure malicious Git filter commands and achieve code execution on the HAX CMS server. Version 26.0.0 patches the issue.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	haxtheweb
Product	haxcms-nodejs
Versions	Version < 26.0.0 is affected

Vendor	haxtheweb
Product	haxcms-php
Versions	Version < 26.0.0 is affected

References

https://github.com/haxtheweb/issues/security/advisories/GHSA-q759-vxg8-vq5j

Problem Types

CWE-15: External Control of System or Configuration Setting CWE
CWE-73: External Control of File Name or Path CWE
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE