Home/CVE/Uncontrolled Recursion vulnerability in Apache Commons. When processing an untrusted configuration file, Commons Config
CVE

CVE-2026-45205

Uncontrolled Recursion vulnerability in Apache Commons. When processing an untrusted configuration file, Commons Config

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.

MEDIUM · CVSS 5.3 EPSS 0.00129
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-674Uncontrolled Recursion
▤

Affected Products & Versions

1
apache commons configuration>= 2.2 and < 2.15.0
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.apache.commons:commons-configuration2 MODERATE fixed in 2.15.0
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security@apache.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 May 2026 · 12:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2026:10784-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/apache/commons-configuration/pull/634Issue TrackingPatch
https://lists.apache.org/thread/q3q3j10ohcqhs6o0rg1v7kz6kk27vtkkMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/14/5Mailing ListThird Party Advisory
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