CVE-2026-16180
Received Received - Intake

Denial-of-Service in IBM App Connect Enterprise Toolkit

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: IBM Corporation

Description
IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, and 12.0.1.0 through 12.0.12.28 and IBM Integration Bus for z/OS 10.1.0.0 through 10.1.0.7 Toolkit could allow an authenticated user to cause a denial-of-service condition due to improper validation of XML entities.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-05
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-16180
EUVD
EUVD-2026-71490

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
ibm app_connect_enterprise From 13.0.1.0 (inc) to 13.0.8.1 (inc)
ibm app_connect_enterprise From 12.0.1.0 (inc) to 12.0.12.28 (inc)
ibm integration_bus_for_zos From 10.1.0.0 (inc) to 10.1.0.7 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-776 The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.

Attack-Flow Graph

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Executive Summary

IBM App Connect Enterprise and IBM Integration Bus for z/OS have a vulnerability where an authenticated user can cause a denial-of-service condition by exploiting improper validation of XML entities.

Detection Guidance

This vulnerability involves improper XML entity validation in IBM App Connect Enterprise and IBM Integration Bus for z/OS. Detection requires checking for affected versions and monitoring for denial-of-service conditions during XML processing. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

This vulnerability allows an attacker with access to cause the application to become unresponsive, leading to service disruption and potential downtime for systems using these IBM products.

Compliance Impact

The vulnerability allows an authenticated user to cause a denial-of-service condition due to improper validation of XML entities. This could potentially impact compliance with GDPR by disrupting data processing operations or HIPAA by affecting the availability of healthcare-related systems. However, specific compliance impacts depend on system configuration and usage.

Mitigation Strategies

Update IBM App Connect Enterprise to versions beyond 13.0.8.1 or 12.0.12.28 and IBM Integration Bus for z/OS to versions beyond 10.1.0.7 to address the XML entity validation issue.

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