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PatchSiren cyber security CVE debrief

CVE-2026-46394 haxtheweb CVE debrief

CVE-2026-46394 is an OS command injection vulnerability in the Git.php library of the HAXcms PHP backend. The vulnerability allows an attacker to execute OS commands with the privileges of the web server. This issue can lead to full remote code execution and complete system compromise when combined with another vulnerability that allows configuration manipulation. The vulnerability was patched in version 26.0.0.

Vendor
haxtheweb
Product
haxcms-php
CVSS
HIGH 7.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-06-08
Advisory published
2026-06-05
Advisory updated
2026-06-08

Who should care

Users of HAX CMS, especially those using the PHP backend, should be aware of this vulnerability and take steps to mitigate it. This includes upgrading to version 26.0.0 or later.

Technical summary

The HAX CMS Git.php library constructs shell command strings using unsanitized input and executes them via proc_open(). An attacker who can control parameters passed into Git operations can execute arbitrary OS commands. Out of 17 functions that invoke shell commands, only 1 function (commit()) correctly uses escapeshellarg().

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to version 26.0.0 or later
  • Review and sanitize input parameters passed into Git operations
  • Implement additional security measures to prevent configuration manipulation

Evidence notes

CVE-2026-46394 has a CVSS score of 7.7 and is considered HIGH severity. The vulnerability was published on 2026-06-05T19:16:33.447Z and modified on 2026-06-08T19:16:45.453Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46394 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46394

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46394 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46394

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.