IBM App Connect Enterprise: Information disclosure via unrestricted IP binding (CVE-2026-92559)

IBM App Connect Enterprise versions 13.0.1.0 through 13.0.8.2 contain a security vulnerability (CVE-2026-92559) that allows a remote attacker to gain unauthorized access to sensitive information. The issue arises from the application binding its internal or administrative services to an unrestricted network interface, such as 0.0.0.0, instead of limiting them to a local loopback address or a specific management interface.

This misconfiguration makes services that were intended to be internal accessible to remote actors who can route packets to the vulnerable host. An attacker could potentially probe these exposed interfaces to extract configuration data, operational details, or other sensitive information processed by the integration engine. Organizations utilizing these versions should verify their network listener configurations and apply the necessary patches provided by IBM.

Impact

Successful exploitation allows for unauthorized information disclosure, potentially exposing internal configuration parameters and sensitive operational data. In enterprise integration environments, this information could assist attackers in further internal reconnaissance or facilitate secondary attacks against integrated systems.

Recommendation

• Review all running instances of IBM App Connect Enterprise to determine if they fall within the 13.0.1.0 through 13.0.8.2 version range.
• Audit network listener configurations for all integration nodes to ensure administrative and internal services are not bound to external-facing interfaces.
• Apply the security update from IBM to resolve CVE-2026-92559 across all impacted infrastructure.
• Implement firewall rules or host-based access control lists (ACLs) to restrict access to the ports utilized by App Connect Enterprise management services, ensuring only authorized source IPs can communicate with these endpoints.