CVE-2026-45205

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-05-14. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 15, 2026

Advisory Details (3)

Auto-updated Jun 16, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic

oss-security - CVE-2026-45205: Apache Commons Configuration: StackOverflowError for YAML input with cycles

http://www.openwall.com/lists/oss-security/2026/05/14/5
generic
https://lists.apache.org/thread/q3q3j10ohcqhs6o0rg1v7kz6kk27vtkk
github_pr

Detect and avoid processing cycles in YAML input (YAMLConfiguration)

Fix merged in apache/commons-configuration PR #634 on 2026-05-11 — awaiting tagged release

https://github.com/apache/commons-configuration/pull/634

Vendor Advisories for CVE-2026-45205(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatcommons-configuration22026-08-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
commons-configuration22.10.1-1 ... 2.8.0-2 (8 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
commons-configuration22.10.1-1, 2.11.0-1, 2.11.0-2, 2.11.0-3, 2.8.0-2——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
commons-configuration22.11.0-2, 2.11.0-3——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
commons-configuration22.11.0-2, 2.11.0-3——
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.commons:commons-configuration22.10.0 ... 2.9.0 (14 versions)2.15.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 137 total refreshes for this CVE.

  1. 2026-08-26 14:46 UTCEPSS rescore
  2. 2026-08-25 13:49 UTCEPSS rescore
  3. 2026-08-23 17:41 UTCEG score recompute
  4. 2026-08-23 17:41 UTCVendor advisory
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-22 01:53 UTCEG score recompute
  7. 2026-08-22 01:53 UTCVendor advisory
  8. 2026-08-21 23:49 UTCEPSS rescore
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  10. 2026-08-20 19:41 UTCEG score recompute
  11. 2026-08-20 19:41 UTCVendor advisory
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  15. 2026-08-17 10:27 UTCEG score recompute
  16. 2026-08-17 10:27 UTCVendor advisory
  17. 2026-08-16 14:56 UTCEPSS rescore
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  19. 2026-08-16 03:58 UTCVendor advisory
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 01:30 UTCEPSS rescore
  22. 2026-08-15 00:26 UTCVendor advisory
  23. 2026-08-14 02:26 UTCEG score recompute
  24. 2026-08-14 02:26 UTCVendor advisory
  25. 2026-08-13 22:00 UTCEPSS rescore
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  1. 2026-08-12 20:56 UTCEG score recompute
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  32. 2026-07-23 03:16 UTCEG score recompute
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  39. 2026-07-18 01:59 UTCOSV refresh
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-45205?
CVE-2026-45205 is a medium vulnerability published on May 14, 2026. 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,…
When was CVE-2026-45205 disclosed?
CVE-2026-45205 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45205 actively exploited?
CVE-2026-45205 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.4% of all scored CVEs.
What is the CVSS score of CVE-2026-45205?
CVE-2026-45205 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-45205?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45205, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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