CVE-2026-34113 in language-system
Summary
by MITRE • 07/01/2026
Guardian language-system passes the id GET parameter directly into a PHP exec() call in speech_text.php (line 18) without sanitization: exec(\"php jobs/speech_audio_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.
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Analysis
by VulDB Data Team • 07/01/2026
This vulnerability represents a critical command injection flaw in the guardian language-system where user input from the id GET parameter is directly incorporated into a PHP exec() function call without any sanitization or validation measures. The specific code path occurs in speech_text.php at line 18 where the command construction concatenates the login_session variable with the unsanitized $_GET['id'] parameter, creating an executable shell command that can be manipulated by remote attackers. The absence of authentication requirements means this vulnerability is accessible to any unauthenticated user with knowledge of the affected endpoint.
The technical exploitation of this flaw follows a classic command injection pattern where an attacker can append shell metacharacters such as semicolons, pipes, or backticks to the id parameter to execute arbitrary operating system commands on the vulnerable server. This type of vulnerability falls under CWE-78 which specifically addresses improper neutralization of special elements used in OS commands, and represents a direct violation of secure coding practices for input validation and command construction. The attack vector is particularly dangerous because it allows remote code execution without requiring any authentication credentials, making it highly attractive to malicious actors.
The operational impact of this vulnerability extends beyond simple command execution as it provides attackers with complete control over the affected server's operating system functionality. An attacker could potentially escalate privileges, access sensitive data, install malware, or use the compromised system as a pivot point for further attacks within the network infrastructure. The lack of authentication requirements means that this vulnerability can be exploited at scale without additional authorization barriers, and the direct integration with the speech_audio_text.php job processing system suggests potential access to audio processing workflows and associated data repositories.
Mitigation strategies should focus on immediate input sanitization and validation of all user-supplied parameters before they are used in system command construction. The recommended approach involves implementing proper parameter escaping using PHP's escapeshellarg() or escapeshellcmd() functions, or better yet, eliminating the use of exec() with dynamic inputs entirely by employing safer alternatives such as prepared statements or direct API calls to processing services. Security measures should also include implementing authentication checks for all system interfaces, rate limiting on endpoint access, and network-based intrusion detection systems to monitor for suspicious command execution patterns. From an ATT&CK framework perspective, this vulnerability maps to T1059.001 for command and scripting interpreter execution, and T1203 for exploitation for gain, making it a critical priority for immediate remediation in accordance with NIST SP 800-53 security controls for input validation and privilege management.