CVE-2026-45205

Apache Commons Configuration: StackOverflowError for YAML input with cycles

CVSS 5.3 MEDIUMEPSS 0.5%CWE-674

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

14 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

Apache Software Foundation · Apache Commons Configuration

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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