Which versions of PHP are affected by EUVD-2026-41066?

Guardian language-system contains a critical unauthenticated remote code execution vulnerability (CVE-2026-34108, CVSS 9.3) that allows attackers to execute arbitrary operating-system commands on…

How to fix or mitigate EUVD-2026-41066?

24 hours: Identify all Guardian language-system installations; implement Web Application Firewall (WAF) rules to block requests containing shell metacharacters (|, ;, &, $, `, etc.) in the 'id' parameter; restrict network access to text.php to trusted sources only if operationally feasible. 7 days: Deploy input validation and shell-escaping controls in front of affected text.php; enable comprehensive request logging and configure alerts for exploitation patterns. 30 days: Escalate to Guardian vendor for patch timeline confirmation; if no patch forthcoming, evaluate migration to alternative products or implement vendor-supplied hardened configurations.

PHP EUVD-2026-41066

Q: What is the CVSS score of EUVD-2026-41066?

EUVD-2026-41066 has a CVSS 4.0 base score of 9.3 (Critical). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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. EPSS exploitation probability: 0.5%.

| CVE-2026-34108 CRITICAL

OS Command Injection (CWE-78)

2026-07-01 disclosure@vulncheck.com

GHSA-4pwj-crpq-5mw6

PHP Command Injection

9.3

CVSS 4.0 · Vendor: vulncheck

Severity by source

Vendor (vulncheck) PRIMARY

9.3 CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

Primary rating from Vendor (vulncheck) · only source for this CVE.

CVSS VectorVendor: vulncheck

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Jul 01, 2026 - 17:31 vuln.today

DescriptionCVE.org

Guardian language-system passes the id GET parameter directly into a PHP exec() call in text.php (line 15) without sanitization: exec(\"php jobs/text.php \".$login_session.\" \".$_GET['id'].\" ...\"). No authentication is required. An unauthenticated remote attacker can append shell metacharacters to execute arbitrary OS commands on the server.

AnalysisAI

OS command injection in the Guardian language-system lets an unauthenticated remote attacker execute arbitrary operating-system commands on the hosting server. The flaw arises because text.php passes the user-controlled 'id' GET parameter straight into a PHP exec() call without sanitization, allowing shell metacharacters to break out of the intended command. The CVSS 4.0 base score is 9.3 (network vector, no privileges, no user interaction); no public exploit is identified at time of analysis, though a referenced gist and a VulnCheck advisory document the issue.