The guardian language-system contains an SQL injection vulnerability (CVE-2026-34102) due to improper neutralization of special elements in the id GET parameter. Specifically, job_info_get.php line 16 constructs a SQL query by directly embedding the id parameter without sanitization: SELECT * FROM jobs where input1 = '".$_GET['id']."'. This allows an authenticated attacker to perform error-based SQL injection attacks to extract sensitive database information. The vulnerability is rated critical with a CVSS 4.0 score of 9.3. No vendor advisory or patch information is currently available, and the product is not a cloud service.

An authenticated attacker can exploit this vulnerability to perform error-based SQL injection, potentially extracting sensitive data from the backend database. The vulnerability requires no privileges beyond authentication and no user interaction, making it highly exploitable. The high CVSS score indicates a significant risk to confidentiality, integrity, and availability of the affected system's data.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, it is recommended to implement input validation and parameterized queries to prevent SQL injection. Monitor for vendor updates regarding patches or official mitigations.