CVE-2026-46394: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in haxtheweb haxcms-php
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an OS command injection vulnerability exists in the Git.php library of the HAXcms PHP backend. The application 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 with the privileges of the web server. Out of 17 functions that invoke shell commands only 1 function (`commit()`) correctly uses `escapeshellarg()`. When combined with another vulnerability that allows configuration manipulation, this issue can lead to full remote code execution and complete system compromise. Version 26.0.0 patches the issue.
AI Analysis
Technical Summary
CVE-2026-46394 is an OS command injection vulnerability in haxtheweb's haxcms-php product affecting versions before 26.0.0. The vulnerability arises from improper neutralization of special elements in shell command construction within the Git.php library. Specifically, the application uses unsanitized input in shell commands executed via proc_open(), with only one function properly escaping arguments. This allows attackers who can influence Git operation parameters to execute arbitrary OS commands with the privileges of the web server. When combined with a separate configuration manipulation vulnerability, it can result in full remote code execution and complete system compromise. The issue is fixed in version 26.0.0.
Potential Impact
An attacker able to control parameters passed to Git operations can execute arbitrary operating system commands with the privileges of the web server process. This can lead to remote code execution and potentially full system compromise if combined with other vulnerabilities. The CVSS 4.0 score is 7.7 (high severity), reflecting network attack vector, high complexity, partial privileges required, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade to haxcms-php version 26.0.0 or later, which patches this OS command injection vulnerability. No other mitigation or temporary fix is indicated. Users should apply this official fix to remediate the issue.
CVE-2026-46394: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in haxtheweb haxcms-php
Description
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an OS command injection vulnerability exists in the Git.php library of the HAXcms PHP backend. The application 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 with the privileges of the web server. Out of 17 functions that invoke shell commands only 1 function (`commit()`) correctly uses `escapeshellarg()`. When combined with another vulnerability that allows configuration manipulation, this issue can lead to full remote code execution and complete system compromise. Version 26.0.0 patches the issue.
CVSS v4.0
Score 7.7high
Affected software
pkg:github/haxtheweb/haxcms-phpRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-46394 is an OS command injection vulnerability in haxtheweb's haxcms-php product affecting versions before 26.0.0. The vulnerability arises from improper neutralization of special elements in shell command construction within the Git.php library. Specifically, the application uses unsanitized input in shell commands executed via proc_open(), with only one function properly escaping arguments. This allows attackers who can influence Git operation parameters to execute arbitrary OS commands with the privileges of the web server. When combined with a separate configuration manipulation vulnerability, it can result in full remote code execution and complete system compromise. The issue is fixed in version 26.0.0.
Potential Impact
An attacker able to control parameters passed to Git operations can execute arbitrary operating system commands with the privileges of the web server process. This can lead to remote code execution and potentially full system compromise if combined with other vulnerabilities. The CVSS 4.0 score is 7.7 (high severity), reflecting network attack vector, high complexity, partial privileges required, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade to haxcms-php version 26.0.0 or later, which patches this OS command injection vulnerability. No other mitigation or temporary fix is indicated. Users should apply this official fix to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T21:04:10.931Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a231d8ae29bf47b50a98346
Added to database: 06/05/2026, 19:03:38 UTC
Last enriched: 06/13/2026, 09:43:45 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 47
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