CVE-2026-17131

Summary

IBM API Connect contains a server-side request forgery (SSRF) vulnerability that allows unauthenticated remote attackers to bypass outbound request restrictions and force the server to contact arbitrary destinations, potentially leaking sensitive internal or external responses.

Exploitability

Exploitation requires no authentication or user interaction and is straightforward for an attacker with network access to the affected API Connect gateway.

Blast radius

Successful exploitation could expose internal services, cloud metadata endpoints, or third-party APIs to the attacker, leading to data exfiltration, lateral movement, or further compromise of connected systems.

Detection

Defenders should monitor for outbound HTTP/HTTPS requests from the API Connect gateway to unexpected internal IP ranges (e.g., 10.x.x.x, 192.168.x.x, 172.16–31.x.x), localhost (127.0.0.1), or cloud metadata endpoints (e.g., 169.254.169.254) that correlate with external API calls or unusual timing patterns in gateway logs.

Prioritized remediation

Upgrade to IBM API Connect 12.1.1.3 or later, which contains the vendor-provided fix for CVE-2026-17131.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.