CVE-2026-34112

Deferred Deferred - Pending Action

Command Injection in Guardian Language-System via speechmac.php

Publication date: 2026-07-01

Last updated on: 2026-07-14

Assigner: VulnCheck

Description

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-01

Last Modified

2026-07-14

Generated

2026-07-21

AI Q&A

2026-07-01

EPSS Evaluated

2026-07-20

NVD

CVE-2026-34112

EUVD

EUVD-2026-41070

Affected Vendors & Products

Vendor	Product	Version / Range
guardian_language_system	language-system	to e42c395 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-78	The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

CVE-2026-34112 is an unauthenticated OS command injection vulnerability in the Guardian language-system, specifically in the speechmac.php file. The vulnerability occurs because the 'id' GET parameter is passed directly into a PHP exec() call without any sanitization or validation. This allows a remote attacker to append shell metacharacters to the 'id' parameter and execute arbitrary operating system commands on the server.

Impact Analysis

This vulnerability can have severe impacts because it allows an unauthenticated remote attacker to execute arbitrary OS commands on the affected server. This can lead to full system compromise, including unauthorized data access, data modification, service disruption, or using the server as a pivot point for further attacks. The vulnerability has a critical severity rating with a CVSS score of 9.3, indicating high risk.

Mitigation Strategies

The vulnerability exists because the 'id' GET parameter is passed directly into a PHP exec() call without sanitization, allowing unauthenticated remote attackers to execute arbitrary OS commands.

Immediate mitigation steps include restricting access to the vulnerable speechmac.php file, applying input validation or sanitization to the 'id' parameter to prevent command injection, and updating or patching the Guardian Language-System to a fixed version if available.

Since no authentication is required for exploitation, it is critical to limit network exposure of the affected service and monitor for suspicious activity.

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