CVE-2026-34102 in language-system
Summary
by MITRE • 07/01/2026
Guardian language-system passes the id GET parameter directly into an unsanitized SQL query in job_info_get.php (line 16): SELECT * FROM jobs where input1 = '\".$_GET['id'].\"'. An authenticated attacker can perform error-based SQL injection to extract database contents.
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Analysis
by VulDB Data Team • 07/01/2026
This vulnerability represents a critical sql injection flaw in the guardian language-system's job_info_get.php component where user-supplied input from the id GET parameter is directly incorporated into an unsanitized sql query without proper validation or escaping mechanisms. The specific implementation at line 16 constructs a sql statement that concatenates the raw $_GET['id'] value directly into the query structure, creating an environment where malicious actors can manipulate the sql execution flow through crafted input values.
The technical exploitation of this vulnerability follows standard error-based sql injection techniques where an attacker can craft malicious id parameter values that cause the database server to return error messages containing sensitive data from the underlying database structure. This particular implementation lacks any form of input sanitization or parameterized query construction, making it susceptible to various sql injection payloads that can extract table schemas, user credentials, and other confidential information stored within the database.
The operational impact of this vulnerability is significant as it allows authenticated attackers with knowledge of the system's structure to perform unauthorized data access and potential data exfiltration. Since the vulnerability requires only authentication to exploit, it represents a privilege escalation path that could allow attackers to gain access to sensitive job-related information, potentially including personal data or confidential business information stored in the jobs table. The error-based injection approach provides attackers with direct feedback during exploitation, making it easier to extract database contents systematically.
Security controls should immediately implement parameterized queries or prepared statements to prevent sql injection attacks by separating sql command structure from data values. Input validation and sanitization mechanisms must be deployed to filter out malicious characters and patterns that could be used in sql injection attempts. The system should also implement proper error handling that prevents sensitive database information from being exposed through error messages, following secure coding practices outlined in owasp's top ten and cwe 89. Additionally, access controls should be reviewed to ensure only authorized users can access job information retrieval functions, and logging mechanisms should be enhanced to detect unusual query patterns or potential exploitation attempts.
This vulnerability aligns with cwe 89 sql injection and demonstrates characteristics consistent with attack techniques categorized under mitre att&ck tactic initial access through command and control communications or privilege escalation via data manipulation. The exposure of database contents through this vector could potentially lead to further system compromise if the database contains user credentials or system configuration details that attackers could leverage for additional attacks within the network infrastructure.