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TI-2026-33022 Aliases CVE-2026-45205GHSA-337m-mw94-2v6g

Apache Commons Configuration: StackOverflowError for YAML input with cycles

Priority LOW 30CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Partial Red Hat: 3 fixed, 5 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-674.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00469 40th percentileScored 2026-11-07
Fix Partial Apache Commons Configuration (Apache Software Foundation): 2.15.0org.apache.commons:commons-configuration2 (Maven): 2.15.0Red Hat: 3 advisoriesRed Hat: 3 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Commons Configuration2.2 to before 2.15.02.15.0Patch availableCNA
—org.apache.commons:commons-configuration2 (Maven)2.2 to before 2.15.02.15.0Patch availableGHSA-337m-mw94-2v6g
  • Apache Commons Configuration VendorApache Affected 2.2 to before 2.15.0 Fixed in 2.15.0 Patch available CNA
  • org.apache.commons:commons-configuration2 (Maven) Vendor— Affected 2.2 to before 2.15.0 Fixed in 2.15.0 Patch available GHSA-337m-mw94-2v6g

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:commons_configuration:*:*:*:*:*:*:*:*2.2 to before 2.15.0VulnerableApache
  • cpe:2.3:a:apache:commons_configuration:*:*:*:*:*:*:*:* Versions 2.2 to before 2.15.0 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Commons Configuration (Apache Software Foundation) Fixed in 2.15.0
  • Fix · GHSA-337m-mw94-2v6g org.apache.commons:commons-configuration2 (Maven) Fixed in 2.15.0 Advisory →

Red Hat 3 advisories

  • RHSA-2026:66545 Released 2026-09-10 · Red Hat rating Important
    Red Hat AMQ Broker 7.13.6 release and security update
    • Red Hat AMQ Broker 7.13.6
  • RHSA-2026:66488 Released 2026-09-10 · Red Hat rating Important
    Red Hat AMQ Broker 7.14.1 release and security update
    • Red Hat AMQ Broker 7.14.1
  • RHSA-2026:54622 Released 2026-08-13 · Red Hat rating Important
    Red Hat Build of Apache Camel 4.18.3 for Spring Boot release.
    • Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift Developer Tools and ServicesAffectedNo fix yet
Red Hat AMQ ClientsAffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Single Sign-On 7AffectedNo fix planned: Will not fix
Red Hat build of Apicurio Registry 3AffectedNo fix yet
Red Hat AMQ Broker 7.13.6Fixed RHSA-2026:66545
Red Hat AMQ Broker 7.14.1Fixed RHSA-2026:66488
Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16Fixed RHSA-2026:54622
Not affected: 7 products
  • Red Hat Data Grid 8
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat JBoss Enterprise Application Platform 7
  • Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat Satellite 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45205
  2. 2026-10-03 Alias added: GHSA-337m-mw94-2v6g
  3. 2026-10-16 Affected versions changed · Red Hat
  4. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 1

Advisory 3

Other 1

  • TI-2022-14972 Apache Commons Configuration insecure interpolation defaults CVSS 3.1CRITICAL 9.8
  • TI-2020-01877 Improper input validation in Apache Commons Configuration CVSS 3.1CRITICAL 10.0
  • TI-2024-19305 Apache Commons Configuration: StackOverflowError adding property in AbstractListDelimiterHandler.flattenIterator() CVSS 3.1HIGH 7.3
  • TI-2025-29118 Apache Commons Configuration: Uncontrolled Resource Consumption when loading untrusted configurations in 1.x CVSS 3.1MEDIUM 6.5
  • TI-2024-19306 Out-of-bounds write in Apache Commons Configuration CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences