CVE-2026-17398 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 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 represents a significant security risk classified as Server-Side Request Forgery, commonly abbreviated as SSRF. This class of vulnerability allows an attacker to induce the server-side application to make HTTP requests to arbitrary domains or internal resources that would otherwise be inaccessible. In this specific instance, the flaw enables a remote authenticated attacker to exploit the application's trust in user-supplied input within API gateway configurations or request routing mechanisms. By manipulating these inputs, the attacker can force the IBM API Connect appliance to send crafted requests to internal services, metadata endpoints of cloud providers, or other sensitive backend systems that are not intended for public access.
From a technical perspective, SSRF vulnerabilities typically arise when an application fetches a remote resource without validating the user-supplied URL or hostname. In the context of IBM API Connect, this likely involves components responsible for proxying requests to upstream services or integrating with external APIs where destination addresses might be partially controlled by the authenticated user. The authentication requirement indicates that while the attack surface is restricted compared to unauthenticated SSRF variants, it still poses a severe threat within enterprise environments where attackers may already have compromised legitimate credentials through phishing, credential stuffing, or other initial access vectors. Once inside the network perimeter with valid API keys or session tokens, an attacker can leverage this flaw to pivot further into the internal infrastructure.
The operational impact of this vulnerability is primarily centered on information disclosure and potential lateral movement within a protected network segment. By directing server-side requests to internal endpoints such as Kubernetes metadata services, database administration interfaces, or configuration management systems, an attacker can extract sensitive data including authentication tokens, private keys, internal IP addresses, and service configurations. This exposure undermines the confidentiality integrity of the organization's API ecosystem and surrounding infrastructure. Furthermore, depending on the specific backend services targeted, SSRF could potentially lead to more severe consequences such as remote code execution if certain legacy or misconfigured services are vulnerable to command injection via their response handling mechanisms, although the primary reported impact remains sensitive information retrieval.
This vulnerability aligns with CWE-918, which defines Server-Side Request Forgery flaws where a web server retrieves data from a user-supplied URL without proper validation of the destination address. It also maps closely to MITRE ATT&CK technique T1557, specifically Adversary-in-the-Middle or Lateral Tool Transfer variants that utilize SSRF for network reconnaissance and credential harvesting within cloud-native environments. The ability to access internal resources effectively allows attackers to map out the attack surface of an organization's API gateway architecture, identifying high-value targets such as authentication servers or data stores that are not directly exposed to the internet but remain reachable through the compromised application server.
Mitigation strategies for this vulnerability involve immediate patching to the latest fixed version provided by IBM, which addresses the input validation logic responsible for allowing unauthorized internal requests. In addition to applying vendor-supplied patches, organizations should implement network-level controls such as egress filtering and web application firewalls that restrict outbound connections from API gateway components to only known and necessary destinations. It is also critical to enforce strict allow-listing of hostnames in any configuration parameters where user input influences the target URL. Security teams should monitor logs for unusual outbound traffic patterns originating from IBM API Connect instances, particularly requests directed toward internal IP ranges or cloud metadata endpoints like 169.254.169.254 commonly used by virtual machines to retrieve instance-specific data.