CVE-2026-0603 identifies a critical SQL injection vulnerability in Red Hat AMQ Broker 7, which leverages the Hibernate framework for database interactions. The flaw arises from improper neutralization of special characters in SQL commands, specifically within the InlineIdsOrClauseBuilder component. This vulnerability is classified as a second-order SQL injection, meaning that malicious input is stored and later executed in a SQL context without proper sanitization. An attacker with low privileges can craft non-alphanumeric characters in the ID column to manipulate SQL queries. This can result in unauthorized access to sensitive data, including system files, and allow attackers to alter or delete database records. The vulnerability can also cause application-level denial of service by corrupting database operations. The CVSS v3.1 score of 8.3 reflects high impact on confidentiality and integrity, with low attack complexity and no user interaction required. Although no exploits have been reported in the wild yet, the vulnerability's nature and ease of exploitation make it a significant threat. The lack of specified affected versions suggests all versions of Red Hat AMQ Broker 7 using the vulnerable Hibernate component may be impacted. The vulnerability was published on January 23, 2026, and is assigned by Red Hat.

For European organizations, this vulnerability poses a substantial risk to the confidentiality, integrity, and availability of critical messaging infrastructure. Red Hat AMQ Broker is widely used in enterprise environments for asynchronous messaging and integration, often underpinning critical business processes and services. Exploitation could lead to unauthorized data disclosure, including sensitive business or personal information, potentially violating GDPR and other data protection regulations. Data manipulation or deletion could disrupt business operations, cause financial losses, and damage organizational reputation. Application-level denial of service could interrupt communication between systems, affecting service continuity. Given the remote exploitability and low privilege requirements, attackers could leverage this vulnerability as a foothold for further network compromise. The impact is particularly severe for sectors such as finance, healthcare, telecommunications, and government services, where messaging brokers are integral to operations.

Organizations should immediately verify their use of Red Hat AMQ Broker 7 and identify deployments utilizing the vulnerable Hibernate InlineIdsOrClauseBuilder component. Applying vendor-provided patches or updates as soon as they become available is critical. In the absence of patches, implement strict input validation and sanitization on all inputs, especially those involving ID columns or SQL query parameters. Employ Web Application Firewalls (WAFs) or SQL injection detection/prevention systems to monitor and block suspicious queries. Conduct thorough code reviews and security testing focusing on SQL injection vectors within messaging broker integrations. Restrict database user privileges to the minimum necessary to limit the impact of potential exploitation. Enable detailed logging and monitoring to detect anomalous database queries or access patterns. Additionally, segment network access to the AMQ Broker to reduce exposure to untrusted networks. Regularly update and audit security controls to ensure ongoing protection.