CVE-2026-30711: Devome GRR SQL Injection Vulnerability

CVE-2026-30711 Overview

CVE-2026-30711 is a SQL Injection vulnerability affecting Devome GRR v4.5.0. The vulnerability exists in the include/session.inc.php file, where multiple authenticated SQL injection flaws were discovered. Attackers who have authenticated to the application can exploit these vulnerabilities through the referer and user-agent HTTP headers to execute arbitrary SQL commands against the backend database.

Critical Impact

Authenticated attackers can exploit SQL injection flaws in session handling to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise.

Affected Products

• Devome GRR v4.5.0

Discovery Timeline

• 2026-03-19 - CVE CVE-2026-30711 published to NVD
• 2026-03-19 - Last updated in NVD database

Technical Details for CVE-2026-30711

Vulnerability Analysis

This vulnerability is classified as an authenticated SQL Injection flaw affecting the session management component of Devome GRR. The vulnerable code resides in include/session.inc.php, which handles user session data including HTTP header values. The application fails to properly sanitize the referer and user-agent header values before incorporating them into SQL queries, creating an injection point that authenticated users can exploit.

SQL Injection vulnerabilities of this nature allow attackers to manipulate database queries by injecting malicious SQL code through user-controlled input. While authentication is required to exploit this vulnerability, any authenticated user with minimal privileges could potentially escalate their access or extract sensitive data from the database.

Root Cause

The root cause of this vulnerability is insufficient input validation and sanitization of HTTP header values (referer and user-agent) in the include/session.inc.php file. The application directly incorporates these header values into SQL queries without proper escaping or parameterized query usage, allowing SQL code injection.

Attack Vector

An authenticated attacker can exploit this vulnerability by crafting malicious HTTP requests with specially crafted Referer or User-Agent headers containing SQL injection payloads. When the application processes these headers during session handling, the injected SQL code is executed against the database.

The attack requires:

1. Valid authentication credentials to access the application
2. The ability to send HTTP requests with modified headers
3. Knowledge of the underlying database structure for targeted exploitation

Since no verified code examples are available, readers should refer to the Purrfect Breakpoint SQL Injection Analysis for detailed technical information about the exploitation mechanism.

Detection Methods for CVE-2026-30711

Indicators of Compromise

• Unusual SQL syntax patterns appearing in Referer or User-Agent HTTP headers in web server access logs
• Database error messages in application logs indicating malformed queries originating from session handling
• Unexpected database queries or data access patterns from authenticated user sessions
• Web application firewall (WAF) alerts for SQL injection attempts in HTTP headers

Detection Strategies

• Implement web application firewall rules to detect SQL injection patterns in HTTP headers including Referer and User-Agent
• Monitor database query logs for anomalous query structures or unexpected UNION, SELECT, or other SQL keywords originating from session-related operations
• Enable detailed logging for the include/session.inc.php component and monitor for suspicious activity
• Deploy intrusion detection signatures targeting SQL injection attempts in non-standard input vectors

Monitoring Recommendations

• Configure real-time alerting for SQL injection patterns detected in HTTP header fields
• Establish baseline behavior for authenticated user sessions and alert on deviations
• Implement database activity monitoring to detect unauthorized data access or modification attempts

How to Mitigate CVE-2026-30711

Immediate Actions Required

• Restrict access to the Devome GRR application to trusted users only until a patch is available
• Implement a web application firewall (WAF) with rules to filter SQL injection attempts in HTTP headers
• Review and audit all authenticated user accounts for potential compromise
• Consider disabling or removing functionality that logs or processes Referer and User-Agent headers if not critical to operations

Patch Information

No official patch information is currently available from the vendor. Organizations should monitor the Purrfect Breakpoint Audit Article for updates and check with the Devome GRR maintainers for security updates.

Workarounds

• Deploy input validation at the web server or reverse proxy level to sanitize Referer and User-Agent headers before they reach the application
• Implement parameterized queries or prepared statements in the include/session.inc.php file if source code modifications are possible
• Use a web application firewall with SQL injection detection capabilities configured to inspect all HTTP headers
• Limit database user privileges for the application to reduce the impact of successful SQL injection attacks

As no verified mitigation configuration is available, administrators should refer to their WAF documentation for configuring SQL injection protection rules targeting HTTP header fields.