SQL Injection in Guardian Language-System

Executive Summary

CVE-2026-34102 is a critical SQL injection vulnerability in the Guardian Language-System. It occurs because the 'id' GET parameter in the job_info_get.php file is directly inserted into an SQL query without proper sanitization or validation.

This flaw allows an attacker, even without authentication, to perform error-based SQL injection attacks. By exploiting this, the attacker can extract sensitive data from the database.

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Detection Guidance

This vulnerability can be detected by testing the 'id' GET parameter in the job_info_get.php endpoint for SQL injection flaws. Since the vulnerability is an error-based SQL injection, sending specially crafted input to the 'id' parameter and observing error messages or unusual database responses can indicate its presence.

Common detection methods include using automated SQL injection testing tools or manual testing with commands such as curl or sqlmap targeting the vulnerable URL.

• Using curl to test for SQL injection errors: curl "http://<target>/job_info_get.php?id=1'"
• Using sqlmap to automate detection: sqlmap -u "http://<target>/job_info_get.php?id=1" --batch

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Impact Analysis

This vulnerability can lead to unauthorized access to sensitive database information. An attacker can extract confidential data, potentially leading to data breaches.

Because the attack requires no authentication, it increases the risk of exploitation by any remote attacker.

The impact includes loss of data confidentiality, integrity, and availability, which can severely affect the affected system and its users.

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Compliance Impact

The vulnerability allows an attacker to perform unauthenticated SQL injection to extract database contents, which can lead to unauthorized access to sensitive data.

Such unauthorized data access and potential data breaches can result in non-compliance with data protection regulations and standards like GDPR and HIPAA, which require protection of personal and sensitive information.

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Mitigation Strategies

Immediate mitigation steps include sanitizing and validating the 'id' GET parameter before it is used in SQL queries to prevent injection.

If possible, apply patches or updates from the vendor that address this vulnerability.

As a temporary measure, restrict access to the vulnerable endpoint to trusted users or networks to reduce exposure.

Implement web application firewall (WAF) rules to detect and block SQL injection attempts targeting the 'id' parameter.

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