Security Bulletin
Summary
Apache Commons Configuration versions 2.2 through 2.14.x are vulnerable to an uncontrolled recursion denial of service. When parsing an untrusted YAML configuration file that contains cyclic references, the library throws a StackOverflowError, which can crash the processing thread and make the application unresponsive. An attacker who can supply a crafted YAML file to an application using Commons Configuration can exploit this to cause a denial of service. Users are recommended to upgrade to Apache Commons Configuration version 2.15.0 or later, which resolves the issue.
Vulnerability Details
CVEID: CVE-2026-45205
DESCRIPTION: Uncontrolled Recursion vulnerability in Apache Commons.
When processing an untrusted configuration file, Commons Configuration will throw a StackOverflowError for YAML input with cycles.
This issue affects Apache Commons: from 2.2 before 2.15.0.
Users are recommended to upgrade to version 2.15.0, which fixes the issue.
CWE: CWE-674: Uncontrolled Recursion
CVSS Source: CISA ADP
CVSS Base score: 5.3
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Content Navigator | 26.0.0.0 |
| IBM Content Navigator | 3.1.0.0 |
| IBM Content Navigator | 3.0.15.0 |
| IBM Content Navigator | 3.2.0.0 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading.
| Affected Product(s) | Version(s) | Remediation / Fix |
| IBM Content Navigator | 26.0.0.0 | Apply security fix 26.0.0-IF001 |
| IBM Content Navigator | 3.1.0.0 | Apply security fix 3.1.0-IF010 |
| IBM Content Navigator | 3.0.15.0 | Apply security fix 3.0.15-IF010 |
| IBM Content Navigator | 3.2.0.0 | Apply security fix 3.2.0-IF007 |
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Release Notes:
https://www.ibm.com/support/pages/ibm-content-navigator-version-2600-interim-fix-1-readme
https://www.ibm.com/support/pages/ibm-content-navigator-version-320-interim-fix-7-readme
https://www.ibm.com/support/pages/ibm-content-navigator-version-310-interim-fix-10-readme
https://www.ibm.com/support/pages/ibm-content-navigator-version-3015-interim-fix-10-readme
Acknowledgement
Change History
07 Aug 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:
07 August 2026
Initial Publish date:
07 August 2026
UID
ibm17282866