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Fencer Intel
medium 5.3

CVE-2026-45205 json

Apache Commons Configuration: StackOverflowError for YAML input with cycles

published 5mo ago modified 14d ago also EUVD-2026-30267 , GHSA-337m-mw94-2v6g

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

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.

Patch / fix

  • maven org.apache.commons:commons-configuration2 2.15.0
  • Apache Software Foundation Apache Commons Configuration 2.15.0
  • commons-configuration2 Debian 14 2.15.1-1

debian advisories DEBIAN-CVE-2026-45205

  • apache-commons-text SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 1.15.0-150200.5.14.1
  • apache-commons-configuration2 SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 2.15.0-150200.5.11.1
  • apache-commons-codec SLES for SAP applications 16.0, SLES 16.0 1.22.0-160000.1.1
  • apache-commons-io SLES for SAP applications 16.0, SLES 16.0 2.22.0-160000.1.1
  • apache-commons-cli SLES for SAP applications 16.0, SLES 16.0 1.11.0-160000.1.1
  • apache-commons-text SLES for SAP applications 16.0, SLES 16.0 1.15.0-160000.1.1
  • apache-commons-lang3 SLES for SAP applications 16.0, SLES 16.0 3.20.0-160000.1.1
  • apache-commons-configuration2 SLES for SAP applications 16.0, SLES 16.0 2.15.0-160000.1.1

suse advisories SUSE-SU-2026:2642-1SUSE-SU-2026:21996-1

  • apache-commons-configuration2 openSUSE Tumbleweed 2.15.0-1.1

opensuse advisories openSUSE-SU-2026:10784-1

Is CVE-2026-45205 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-45205 updated cvss 7.5

commons-configuration: Apache Commons Configuration: Denial of Service via uncontrolled recursion with crafted YAML input

  • Red Hat OpenShift Developer Tools and Services jenkins-2-plugins, ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9 Red Hat AMQ Clients commons-configuration2 Red Hat build of Apicurio Registry 3 commons-configuration2 Red Hat Enterprise Linux 6 qpid-cpp, qpid-qmf, ruby-qpid-qmf, python-qpid-qmf, qpid-cpp-client, qpid-cpp-server, +7 more
    affected: workaround, no fix available
  • Red Hat Single Sign-On 7 commons-configuration, commons-configuration2
    affected: workaround, no fix planned “Will not fix”
  • Red Hat AMQ Broker 7.13.6
    fixed: vendor fix RHSA-2026:66545
  • Red Hat AMQ Broker 7.14.1
    fixed: vendor fix RHSA-2026:66488
  • Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16
    fixed: vendor fix RHSA-2026:54622
  • Red Hat Data Grid 8 commons-configuration
    not affected: component not present
  • Red Hat Enterprise Linux 7 apache-commons-configuration, apache-commons-configuration-javadoc
    not affected: vulnerable code not present
  • Red Hat Enterprise Linux 8 maven-assembly-plugin, maven-assembly-plugin-javadoc Red Hat JBoss Enterprise Application Platform 7 commons-configuration Red Hat JBoss Enterprise Application Platform Expansion Pack commons-configuration, commons-configuration2, resilience4j-commons-configuration
    not affected: component not present
show 1 more
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-spark-operator-rhel9, rhoai/odh-th06-cpu-torch210-py312-rhel9, rhoai/odh-th06-cpu-torch291-py312-rhel9, rhoai/odh-th06-rocm64-torch291-py312-rhel9, rhoai/odh-th06-cuda130-torch210-py312-rhel9, rhoai/odh-th06-cuda130-torch291-py312-rhel9 Red Hat Satellite 6 candlepin, candlepin-selinux
    not affected: vulnerable code not in execute path

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
maven org.apache.commons:commons-configuration2
>=2.2, <2.15.0
2.15.0

Affected products

  • Apache Software Foundation Apache Commons Configuration

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.