CVE-2026-11714: IBM WebSphere Liberty SSRF Vulnerability – Patch & Detection Guide

Technical summary

CVE-2026-11714 is a server-side request forgery (CWE-918) vulnerability in IBM WebSphere Application Server Liberty. The vulnerability exists when the apiDiscovery-1.0 feature is enabled. An authenticated attacker with low privileges can leverage this flaw to force the application server to construct and send requests to arbitrary network endpoints, potentially bypassing firewall rules, accessing internal services, or exfiltrating sensitive information. The CVSS 3.1 score of 8.5 (HIGH) reflects the attack vector being network-based with low attack complexity, requiring only low-level authentication, and resulting in high confidentiality impact with some integrity compromise across security boundaries.

Business impact

A successful exploitation of this vulnerability could allow an attacker with valid application credentials to pivot laterally within your infrastructure, access backend systems and databases that should be isolated, or retrieve sensitive data held by internal services. In cloud or multi-tenant environments, the scope change means an attacker could potentially reach resources outside the immediate application boundary. Data breaches, unauthorized system access, and reputational damage are realistic outcomes if exploitation occurs in production environments handling sensitive workloads.

Affected systems

IBM WebSphere Application Server Liberty installations with the apiDiscovery-1.0 feature enabled are affected. Organizations running WebSphere Liberty in development, testing, or production environments with this feature active should assess their exposure. This includes both on-premise and cloud-hosted instances. The vulnerability does not affect instances where the apiDiscovery feature is disabled or not installed.

Exploitability

This vulnerability requires authentication—an attacker must possess valid user credentials to the application. However, the barrier is not high; the CVSS vector indicates low privilege requirements (PR:L), meaning standard application users can trigger the flaw. Network accessibility is straightforward (AV:N), and exploitation does not depend on user interaction (UI:N) or complex conditions (AC:L). The attack is repeatable and reliable, making it attractive to both opportunistic and targeted adversaries once credentials are obtained through other means (phishing, credential stuffing, insider threat, etc.).

Remediation

Immediately disable the apiDiscovery-1.0 feature if it is not required for business operations. IBM has released security updates to patch this vulnerability; consult IBM's official security bulletin for applicable patch versions and update schedules for your specific WebSphere Liberty release. Implement network segmentation to limit the destinations that WebSphere Liberty servers can reach. Apply principle of least privilege to application user accounts. Monitor outbound requests from WebSphere Liberty instances for suspicious patterns.

Patch guidance

Check IBM's official WebSphere Application Server security advisories for patch availability and version numbers. Apply patches to all affected WebSphere Liberty instances according to your change management procedures. If immediate patching is not feasible, disabling the apiDiscovery-1.0 feature is a temporary mitigation. Test patches thoroughly in a non-production environment first, as WebSphere updates can affect application behavior and performance.

Detection guidance

Monitor WebSphere Liberty access logs and audit trails for authenticated users making unusual or repeated requests, particularly those originating from non-standard application entry points or the apiDiscovery endpoints. Network-level detection should focus on unexpected outbound connections from WebSphere Liberty servers to internal resources or unusual external destinations. Implement egress filtering and logging on firewall rules that govern WebSphere Liberty outbound traffic. Look for HTTP/HTTPS requests with high entropy in parameters, encoded payloads, or suspicious URL structures that may indicate SSRF exploitation attempts.

Why prioritize this

This vulnerability merits high priority due to its HIGH CVSS score (8.5), large scope impact, and requirement only for authentication (not admin privileges). Organizations with internet-facing WebSphere Liberty deployments or those in multi-tenant cloud environments should prioritize patching. The presence of apiDiscovery features in development or non-critical systems should also be reviewed, as compromised dev credentials could become a stepping stone to production environments. However, the authentication requirement means insider threats and credential compromise are the primary exploitation vectors—context-specific risk assessment is essential.

Risk score, explained

The CVSS 3.1 score of 8.5 reflects: Network attack vector (AV:N) providing easy remote accessibility; Low attack complexity (AC:L) indicating no special conditions required; Low privileges (PR:L) needed for exploitation; No user interaction (UI:N) required; Changed scope (S:C) allowing impact beyond the vulnerable component; High confidentiality impact (C:H) from SSRF data exfiltration; and Low integrity impact (I:L) from potential manipulation of internal system state. No availability impact is expected. The score appropriately weights the combination of broad reachability with authentication as a modest-but-not-eliminating barrier, and the scope change as a critical escalation factor.

Frequently asked questions