CVE-2026-17294 in API Connect
Summary
by MITRE • 11/07/2026
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery.
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Analysis
by VulDB Data Team • 11/07/2026
The vulnerability identified in IBM API Connect versions ranging from 10.0.8.0 to 10.0.8.12 and 12.1.0.0 to 12.1.1.2 represents a critical server-side request forgery flaw that compromises the integrity of internal network communications. This security defect allows an authenticated remote attacker to manipulate how the application interacts with backend services, effectively bypassing intended access controls by forcing the server to send requests on behalf of the attacker to unintended destinations. The presence of authentication requirements indicates that while the attack surface is restricted to legitimate users or compromised credentials, the severity lies in the ability of such actors to exploit trust relationships between API components and internal infrastructure services.
At a technical level, this vulnerability stems from improper validation of user-supplied input within URL parameters or request headers used for proxying or forwarding requests. When an authenticated user provides a target address that points to an internal resource rather than an external public endpoint, the application fails to adequately sanitize or restrict these inputs. Consequently, the server processes the maliciously crafted request and forwards it to the specified internal IP address or hostname. This behavior mirrors classic SSRF patterns where the victim server acts as a proxy for the attacker's requests, allowing access to services that are otherwise isolated from direct external network exposure.
The operational impact of this vulnerability is significant, particularly in enterprise environments where API Connect serves as a central gateway for microservices and backend applications. An attacker leveraging this flaw can probe internal networks, potentially accessing sensitive management interfaces, database endpoints, or cloud metadata services such as those found on AWS EC2 instances at 169.254.169.254. By extracting data from these internal resources, the attacker may gain access to confidential business logic, customer data, or authentication tokens stored in local configuration files. This can serve as a pivot point for further lateral movement within the network, escalating privileges and compromising the broader security posture of the organization's infrastructure.
From a classification perspective, this issue aligns with CWE-918 Server-Side Request Forgery (SSRF), which describes flaws where an application fetches a remote resource without validating the user-supplied URL. Furthermore, in terms of tactical mapping within the MITRE ATT&CK framework, this vulnerability facilitates techniques associated with Discovery and Collection phases, specifically allowing attackers to gather information about internal network architecture and sensitive data stored on backend systems. The exploitation path typically involves crafting specific HTTP requests that redirect traffic inward, exploiting the trust placed by the application in its own server identity when making outbound connections.
Mitigation strategies must focus on strict input validation and network segmentation principles. Administrators should ensure that all versions of IBM API Connect within the affected ranges are updated to a patched release provided by IBM, which implements rigorous allow-listing mechanisms for internal URLs. Additionally, implementing egress filtering at the firewall level can restrict outbound connections from application servers to only those destinations explicitly required for business operations. It is also advisable to deploy network-level controls that prevent backend services from responding directly to requests originating from API gateway IPs unless specifically authorized, thereby reducing the blast radius of any successful SSRF exploitation attempt.