CVE-2026-16192
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Denial of Service in IBM WebSphere Liberty

Publication date: 2026-07-28

Last updated on: 2026-07-28

Assigner: IBM Corporation

Description
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service vulnerability when the restConnector-2.0 feature is enabled.

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Meta Information

Published
2026-07-28
Last Modified
2026-07-28
Generated
2026-07-29
AI Q&A
2026-07-28
EPSS Evaluated
N/A
NVD
CVE-2026-16192
EUVD
EUVD-2026-50015

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ibm websphere_application_server_liberty From 17.0.0.3 (inc) to 26.0.0.8 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

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Executive Summary

This is a denial of service vulnerability in IBM WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.8. It occurs when the restConnector-2.0 feature is enabled, potentially allowing attackers to disrupt service availability.

Detection Guidance

To detect if the vulnerable restConnector-2.0 feature is enabled, follow IBM's guidance on checking feature usage in your WebSphere Liberty environment. This typically involves inspecting server configuration files or using administrative commands to list enabled features.

Impact Analysis

The vulnerability can lead to service disruption, causing downtime for applications relying on the affected WebSphere Liberty server. Attackers could exploit it to make systems unavailable, impacting business operations.

Compliance Impact

This vulnerability, a denial of service issue in IBM WebSphere Application Server Liberty, could impact compliance with standards like GDPR and HIPAA by disrupting the availability of systems handling sensitive data. Downtime may lead to unauthorized access or data breaches, violating confidentiality and integrity requirements.

Mitigation Strategies

Apply the interim fix for APAR DT496294 or upgrade to Liberty Fix Pack 26.0.0.9 or later. If immediate upgrade is not possible, evaluate the impact in your environment and consider disabling the restConnector-2.0 feature if it is not required.

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