CVE-2026-25936: Teclib GLPI SQL Injection Vulnerability

CVE-2026-25936 Overview

CVE-2026-25936 is a SQL Injection vulnerability affecting GLPI, a free Asset and IT management software package developed by Teclib. Starting in version 11.0.0 and prior to version 11.0.6, an authenticated user can perform a SQL injection attack against the application. This vulnerability allows attackers with valid credentials to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Authenticated attackers can exploit this SQL injection flaw to compromise database integrity, extract sensitive asset and IT management data, and potentially escalate privileges within GLPI deployments.

Affected Products

• Teclib-edition GLPI versions 11.0.0 through 11.0.5
• GLPI Asset and IT Management Software (self-hosted deployments)
• Organizations using GLPI for IT asset tracking and helpdesk management

Discovery Timeline

• 2026-03-17 - CVE-2026-25936 published to NVD
• 2026-03-19 - Last updated in NVD database

Technical Details for CVE-2026-25936

Vulnerability Analysis

This vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The flaw exists in GLPI's handling of user-supplied input, where insufficient sanitization allows an authenticated user to inject malicious SQL statements into database queries.

SQL injection vulnerabilities in asset management systems like GLPI are particularly dangerous because these platforms typically store comprehensive organizational data including hardware inventories, software licenses, network configurations, user information, and helpdesk tickets. Successful exploitation could expose the entire IT infrastructure inventory of an organization.

The attack requires network access and valid authentication credentials to exploit, but does not require any user interaction once the attacker has access. The vulnerability impacts confidentiality, integrity, and availability of the managed data.

Root Cause

The root cause of this vulnerability lies in improper input validation and sanitization within GLPI's codebase. User-controlled input is incorporated into SQL queries without proper parameterization or escaping, allowing attackers to break out of intended query structures and inject arbitrary SQL commands.

GLPI applications that fail to use prepared statements or parameterized queries are susceptible to this class of attack. The fix in version 11.0.6 addresses the vulnerability by implementing proper input sanitization and query parameterization.

Attack Vector

The attack vector is network-based and requires authentication. An attacker with low-privilege credentials to a GLPI instance can craft malicious input containing SQL syntax that, when processed by the application, modifies the intended database query behavior.

Typical exploitation scenarios include:

• Extracting sensitive data from the GLPI database using UNION-based injection
• Modifying or deleting records through manipulated UPDATE or DELETE statements
• Bypassing authorization checks to access restricted information
• Potentially achieving command execution if database permissions allow

For detailed technical information about the vulnerability mechanism, refer to the GLPI Security Advisory.

Detection Methods for CVE-2026-25936

Indicators of Compromise

• Unusual database query patterns in GLPI application logs containing SQL syntax elements like UNION, SELECT, DROP, or comment sequences (--, /*)
• Failed login attempts followed by successful authentication with subsequent abnormal database activity
• Unexpected database errors or timeouts indicating malformed query attempts
• Evidence of data exfiltration or unauthorized bulk data access in database audit logs

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL injection detection rulesets to monitor GLPI traffic
• Enable detailed database query logging and monitor for anomalous query structures
• Implement SentinelOne Singularity XDR to detect suspicious process behavior and network activity on GLPI hosts
• Configure alerting for authentication events followed by unusual application behavior patterns

Monitoring Recommendations

• Review GLPI access logs for authenticated sessions performing unusual data retrieval operations
• Monitor database performance metrics for query anomalies that may indicate injection attempts
• Implement file integrity monitoring on GLPI configuration and application files
• Enable real-time alerting on database query errors that may indicate exploitation attempts

How to Mitigate CVE-2026-25936

Immediate Actions Required

• Upgrade GLPI installations to version 11.0.6 or later immediately
• Audit GLPI access logs for signs of exploitation during the vulnerable period
• Review database contents for unauthorized modifications or data access
• Restrict network access to GLPI instances to authorized users and networks only

Patch Information

Teclib has released GLPI version 11.0.6 which addresses this SQL injection vulnerability. Organizations running affected versions (11.0.0 through 11.0.5) should upgrade immediately.

The official security advisory and patch details are available at the GLPI GitHub Security Advisory.

Workarounds

• Implement network-level access controls to limit GLPI access to trusted IP ranges
• Deploy a Web Application Firewall with SQL injection protection rules in front of GLPI
• Conduct a security audit of user accounts and remove unnecessary or unused credentials
• Consider temporarily disabling external access to GLPI until patching is complete

# Example: Restrict GLPI access via nginx until patched
# Add to your nginx server block for GLPI
location / {
    # Allow only trusted internal networks
    allow 10.0.0.0/8;
    allow 192.168.0.0/16;
    deny all;
    
    # Existing GLPI configuration
    try_files $uri $uri/ /index.php?$query_string;
}