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Security Bulletin: Due to the use of mchange-commons-java, IBM webMethods BPM is vulnerable to Unsafe Reflection ( CVE-2026-55153 )

Security Bulletin


Summary

IBM webMethods BPM includes the standalone utility which includes the vulnerable component mchange-commons-java. The tool operates as a standalone utility and is not part of the main runtime environments.

Vulnerability Details

CVEID:   CVE-2026-55153
DESCRIPTION:   mchange-commons-java is a Java library of shared utility classes used by mchange projects like the c3p0 connection pool. Prior to version 0.6.0, its JNDI ObjectFactory implementation (com.mchange.v2.naming.JavaBeanObjectFactory) will construct objects of arbitrary classes and initialize "JavaBean"-style properties, which for certain classes enables JNDI injection and "deserialization gadgets." Such initialization is unsafe for some classes: for example, setting the contentType property of a Swing JEditorPane to text/html and its text property to HTML containing a stylesheet link will provoke an HTTP GET on an arbitrary URL, potentially from within a trusted security domain. The problem is aggravated by the library's ReferenceIndirector, through which malicious JNDI Reference objects can be smuggled in for dereferencing wherever an application reads a Java-serialized object. This has been resolved in version 0.6.0.
CWE:   CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CVSS Source:   security-advisories@github.com
CVSS Base score:   7.1
CVSS Vector:   (CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM webMethods BPM11.1
IBM webMethods BPM10.15

Remediation/Fixes

IBM strongly recommends addressing the vulnerability by applying the mentioned fixes or later fixes for the affected versions: 

MWS_11.1_Fix6 or later

Fixes can be downloaded and installed via IBM webMethods Update Manager. Refer to How to download webMethods Software ( https://www.ibm.com/support/pages/node/7232491 )

Workarounds and Mitigations

Alternatively for 11.1 and for version 10.15, the lib folder under the following path can be deleted: 
<ibm-webm-home>/MWS/tools/task_export_import/lib/*

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

03 Sep 2026: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
03 September 2026

Initial Publish date:
03 September 2026

UID

ibm17286220