CVE-2026-45205

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.

Score

CVSS 3.1 5.3 Medium

Status

Analyzed - security@apache.org

Published

2026-05-14

Last modified

2026-10-26

Weaknesses

CWE-674

Affected products

• Commons Configuration (Apache)
• Apache Commons Configuration (Apache Software Foundation)

References

• https://github.com/apache/commons-configuration/pull/634
• https://lists.apache.org/thread/q3q3j10ohcqhs6o0rg1v7kz6kk27vtkk
• http://www.openwall.com/lists/oss-security/2026/05/14/5