CVE-2026-33614: Unauthenticated SQL Injection Vulnerability

CVE-2026-33614 Overview

CVE-2026-33614 is an unauthenticated SQL Injection vulnerability affecting the getinfo endpoint. The flaw arises from improper neutralization of special elements used in SQL SELECT commands (CWE-89). An unauthenticated remote attacker can exploit this vulnerability to extract sensitive data from the backend database, resulting in a total loss of confidentiality.

Critical Impact
Unauthenticated attackers can remotely exploit this SQL Injection vulnerability to access and exfiltrate all data from the affected database without requiring any credentials or user interaction.

Affected Products

Products associated with VDE-2026-030 advisory (refer to CERT@VDE advisory for complete list)

Discovery Timeline

April 2, 2026 - CVE-2026-33614 published to NVD
April 2, 2026 - Last updated in NVD database

Technical Details for CVE-2026-33614

Vulnerability Analysis

This SQL Injection vulnerability exists in the getinfo endpoint due to insufficient input validation and improper neutralization of user-supplied data before it is incorporated into SQL queries. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command).

The attack can be executed remotely over the network with low complexity and requires no privileges or user interaction. However, the impact is limited to confidentiality—attackers can read sensitive database contents but cannot modify data or disrupt service availability.

Root Cause

The root cause is inadequate input sanitization in the getinfo endpoint. User-controlled input is directly concatenated into SQL SELECT statements without proper parameterization or escaping. This allows attackers to inject malicious SQL syntax that alters the intended query logic, enabling unauthorized data retrieval.

Attack Vector

The vulnerability is exploitable via network-based attacks targeting the getinfo endpoint. Since no authentication is required, any attacker with network access to the vulnerable service can craft malicious requests containing SQL injection payloads. The low attack complexity means standard SQL injection techniques can successfully exploit this flaw.

The attack flow typically involves:

Attacker identifies the vulnerable getinfo endpoint
Malicious SQL syntax is injected through user-controllable parameters
The backend database executes the attacker-modified query
Sensitive data is returned to the attacker in the response

For detailed technical information, refer to the CERT@VDE Advisory VDE-2026-030.

Detection Methods for CVE-2026-33614

Indicators of Compromise

Unusual or malformed requests to the getinfo endpoint containing SQL syntax characters such as single quotes, double dashes, or UNION keywords
Database query logs showing unexpected SELECT statements or query errors
High volume of requests to the getinfo endpoint from single IP addresses
Error messages in application logs indicating SQL syntax errors or unexpected query results

Detection Strategies

Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in requests to the getinfo endpoint
Enable database query logging and monitor for anomalous SELECT statements or queries accessing sensitive tables
Deploy Intrusion Detection Systems (IDS) with SQL injection signature detection capabilities
Configure application-level logging to capture all requests to the vulnerable endpoint for forensic analysis

Monitoring Recommendations

Monitor network traffic for patterns consistent with SQL injection exploitation attempts
Set up alerts for unusual database access patterns or queries returning large result sets
Implement rate limiting on the getinfo endpoint to detect potential automated exploitation
Review application and database logs regularly for signs of data exfiltration

How to Mitigate CVE-2026-33614

Immediate Actions Required

Apply vendor-provided security patches as soon as they become available
Restrict network access to the vulnerable getinfo endpoint using firewall rules
Implement input validation and parameterized queries if source code modification is possible
Enable WAF rules to block SQL injection attempts targeting the affected endpoint
Monitor systems for signs of exploitation while awaiting a patch

Patch Information

Refer to the CERT@VDE Advisory VDE-2026-030 for official patch information and remediation guidance from the vendor. The CSAF document provides machine-readable security advisory details.

Workarounds

Implement network segmentation to limit access to the vulnerable service from untrusted networks
Deploy a Web Application Firewall with SQL injection protection rules in front of the affected endpoint
Disable or restrict access to the getinfo endpoint if it is not business-critical
Implement IP allowlisting to restrict endpoint access to trusted sources only

bash

# Example: iptables rule to restrict access to the vulnerable service
# Replace <SERVICE_PORT> with the actual port number
iptables -A INPUT -p tcp --dport <SERVICE_PORT> -s <TRUSTED_IP_RANGE> -j ACCEPT
iptables -A INPUT -p tcp --dport <SERVICE_PORT> -j DROP