CVE-2026-17344 in API Connect
Summary
by MITRE • 11/07/2026
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive information due to server-side request forgery. A service that can be reached without authentication could be made to send requests to unintended destinations.
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Analysis
by VulDB Data Team • 11/07/2026
The vulnerability identified in IBM API Connect versions 12.1.0.0 through 12.1.1.2 represents a critical security flaw rooted in server-side request forgery, commonly referred to as SSRF. This class of vulnerabilities allows an attacker to induce the server to make HTTP requests to arbitrary destinations under the control of the attacker or controlled by third parties. In this specific instance, the vulnerability exists within a service component that is accessible without requiring any form of authentication. The absence of access controls on this endpoint creates a direct pathway for exploitation, as it permits unauthenticated actors to interact with internal infrastructure components that are typically isolated from external networks.
The technical mechanism behind this flaw involves the application accepting user-supplied input or configuration parameters and using them to construct outbound network requests without sufficient validation or sanitization of the target destination. When an attacker provides a maliciously crafted URL, the server processes this request and forwards it to the specified address. Because the service lacks authentication requirements, any remote entity on the internet can trigger these internal requests. This capability effectively turns the vulnerable application into a proxy for attacking other systems within the organization's network perimeter or accessing cloud metadata services that contain sensitive credentials and configuration data.
The operational impact of this vulnerability is severe due to its potential for information disclosure and lateral movement within an enterprise environment. By leveraging SSRF, an attacker can probe internal networks, access restricted administrative interfaces, or retrieve sensitive data from internal APIs that are not exposed publicly. Furthermore, in cloud-native deployments, such vulnerabilities often allow attackers to access instance metadata services, which may contain API keys, security tokens, and other credentials necessary for further compromise of the infrastructure. This undermines the confidentiality integrity of the entire system architecture managed by IBM API Connect.
From a classification perspective, this vulnerability aligns with CWE-918, Server-Side Request Forgery (SSRF), specifically involving weak or missing URL validation on server-side requests. In terms of offensive security frameworks, it maps to ATT&CK technique T1557, Adversary-in-the-Middle, as the attacker uses the victim system to relay attacks against other targets, and potentially T1046, Network Service Discovery, if used for internal network scanning. The lack of authentication also relates to CWE-306, Missing Authentication for Critical Function, which exacerbates the risk by removing a primary layer of defense.
Mitigation strategies should focus on immediate patching and architectural hardening. IBM has released updates in later versions that address this flaw; therefore, upgrading to a version beyond 12.1.1.2 is the most effective remediation step. In environments where immediate patching is not feasible, network-level controls such as firewall rules or web application firewalls should be configured to restrict outbound connections from API Connect components to only known and trusted internal endpoints. Additionally, implementing strict input validation on all parameters that influence URL construction can prevent malicious destinations from being processed. Ensuring that all services within the platform require robust authentication is also critical to preventing unauthenticated access vectors like this one.