CVE-2024-29131 is a high-severity (CVSS 7.3) Out-of-bounds Write vulnerability in org.apache.commons:commons-configuration2. A fix is available for org.apache.commons:commons-configuration2 — see the affected versions and patch details below.
Apache Commons Configuration: StackOverflowError adding property in AbstractListDelimiterHandler.flattenIterator()
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-29131.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
org.apache.commons:commons-configuration2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
This Out-of-bounds Write vulnerability in Apache Commons Configuration affects Apache Commons Configuration: from 2.0 before 2.10.1. User can see this as a 'StackOverflowError' when adding a property in 'AbstractListDelimiterHandler.flattenIterator()'. Users are recommended to upgrade to version 2.10.1, which fixes the issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.commons:commons-configuration2 | ≥ 2.0&&< 2.10.1 | 2.10.1org.apache.commons:commons-configuration2:2.10.1 |
Affected Products
commons configurationapachefedorafedoraprojectontap toolsnetappsnapcenternetappDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.commons:commons-configuration2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.commons:commons-configuration2 to 2.10.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-29131 is resolved across your whole dependency graph.
Workarounds
Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.Source: Red Hat security advisory for CVE-2024-29131 (CC BY 4.0)
| Product | Fixed in | Advisory |
|---|---|---|
| Migration Toolkit for Runtimes 1 on RHEL 8 | commons-configuration2 | RHSA-2024:3920 |
| MTA-6.2-RHEL-9 | mta/mta-windup-addon-rhel9:6.2.3-2 | RHSA-2024:3989 |
| Red Hat AMQ Broker 7 | commons-configuration2 | RHSA-2024:2945 |
Frequently Asked Questions
Is CVE-2024-29131 in your dependencies?
Find it across Maven, including transitive dependencies.