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CVE-2020-1953 Apache Commons Configuration

Affected softwareApache Commons Configuration
Severity10.0 Critical CVSS 3.1 2 scores
Fixed in2.7
WeaknessImproper input validation (CWE-20)
Published13 Mar 2020
Updated17 Jun 2026

Description

Apache Commons Configuration uses a third-party library to parse YAML files which by default allows the instantiation of classes if the YAML includes special statements. Apache Commons Configuration versions 2.2, 2.3, 2.4, 2.5, 2.6 did not change the default settings of this library. So if a YAML file was loaded from an untrusted source, it could therefore load and execute code out of the control of the host application.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 6.3% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: apache/commons-configuration add7375.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

10.0 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 10.0 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H NVD Primary published
CVSS 2.0 7.5 none AV:N/AC:L/Au:N/C:P/I:P/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2023 ↗ CPU 2023-Q4 Oracle Analytics / Content Storage Service (Apache Commons Configuration) (6.4.0.0.0, 7.0.0.0.0)
Oracle Critical Patch Update July 2023 ↗ CPU 2023-Q3 Oracle Analytics / Presentation Services (Apache Commons Configuration) (6.4.0.0.0)
Oracle Critical Patch Update October 2020 ↗ CPU 2020-Q4 Oracle Health Sciences Applications / Self Service Analytics (Apache Commons Configuration) (7.1.1, 7.2.0, 7.2.1, 7.3.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Analytics Content Storage Service (Apache Commons Configuration) 6.4.0.0.0, 7.0.0.0.0 6.4.0.0.0 · 7.0.0.0.0
Oracle Analytics Presentation Services (Apache Commons Configuration) 6.4.0.0.0 6.4.0.0.0
Oracle Health Sciences Applications Self Service Analytics (Apache Commons Configuration) 7.1.1, 7.2.0, 7.2.1, 7.3.0 7.1.1 · 7.2.0 · 7.2.1 · 7.3.0

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.commons:commons-configuration2 2.2 2.7 unbounded

Products and versions

4 products, 15 version entries
SourceVendorProductSchemeAffected versions
nvd apache commons configuration generic 2.2 · 2.3 · 2.4 · 2.5 · 2.6
nvd oracle database server generic 11.2.0.4 · 12.1.0.2 · 12.2.0.1 · 18c · 19c
nvd oracle healthcare foundation generic 7.1.1 · 7.2.0 · 7.2.1 · 7.3.0
osv org.apache.commons commons-configuration2 generic ≥ 2.2 and < 2.7

References

URLTags
https://github.com/apache/commons-configuration/commit/add7375cf37fd316d4838c6c56b054fc293b4641 WEB
https://lists.apache.org/thread.html/d0e00f2e147a9e9b13a6829133092f349b2882bf6860397368a52600@%3Cannounce.tomcat.apache.org%3E WEB
https://lists.apache.org/thread.html/r16a2e949e35780c8974cf66104e812410f3904f752df6b66bf292269@%3Ccommits.servicecomb.apache.org%3E WEB
https://lists.apache.org/thread.html/rde2186ad6ac0d6ed8d51af7509244adcf1ce0f9a3b7e1d1dd3b64676@%3Ccommits.camel.apache.org%3E WEB
https://www.oracle.com/security-alerts/cpuoct2020.html WEB
https://lists.apache.org/thread.html/d0e00f2e147a9e9b13a6829133092f349b2882bf6860397368a52600%40%3Cannounce.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r16a2e949e35780c8974cf66104e812410f3904f752df6b66bf292269%40%3Ccommits.servicecomb.apache.org%3E
https://lists.apache.org/thread.html/rde2186ad6ac0d6ed8d51af7509244adcf1ce0f9a3b7e1d1dd3b64676%40%3Ccommits.camel.apache.org%3E

Timeline

Published2020-03-13By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.