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medium advisory

RabbitMQ: Multiple Vulnerabilities

An unauthenticated, remote attacker can exploit multiple vulnerabilities in RabbitMQ to conduct denial-of-service attacks, bypass authorization and tenant boundaries, manipulate or disclose data, and perform cross-site scripting attacks.

The German Federal Office for Information Security (BSI) has released an advisory concerning multiple vulnerabilities identified in RabbitMQ. A remote, unauthenticated attacker can exploit these vulnerabilities to achieve various malicious objectives. These include initiating denial-of-service attacks, circumventing established authorization and tenant boundaries within the system, manipulating or disclosing sensitive data, and executing cross-site scripting (XSS) attacks. The advisory, published on July 23, 2026, details the potential for significant impact on system availability, data integrity, and confidentiality. Organizations utilizing RabbitMQ are advised to address these vulnerabilities promptly to mitigate the risk of compromise.

Impact

Successful exploitation of these vulnerabilities by a remote attacker could lead to severe consequences. The system's availability could be compromised through denial-of-service attacks, rendering RabbitMQ services inaccessible. Attackers could bypass authorization mechanisms, potentially gaining unauthorized access to sensitive tenant data or administrative functions. Furthermore, the integrity and confidentiality of data are at risk, with attackers capable of manipulating or disclosing information. Cross-site scripting vulnerabilities could also be leveraged to compromise user sessions or launch further attacks against administrators or users interacting with the RabbitMQ management interface.

Recommendation

  • Prioritize patching or upgrading your RabbitMQ installations to the latest secure versions as soon as they become available from Broadcom.
  • Regularly review and monitor RabbitMQ application logs for any anomalies related to authorization bypass attempts, unexpected data access, or unusual service disruptions.
  • Implement robust network segmentation and access controls to limit remote access to RabbitMQ instances, especially the management interface, reducing the attack surface for the vulnerabilities described in this brief.