THREATPORT/VULNERABILITY/CVE-2020-1953
CRITICAL SEVERITY

CVE-2020-1953

Commons Configuration vulnerability

CVSS
10.0
EPSS
6.7%
EPSS pct
93th
Exploited
No known
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.
Affected vendor
Apache
Affected product
Commons Configuration
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2020-03-13

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 6.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2020-1953

  • Confirm whether Apache Commons Configuration is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-1953.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-1953

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-1953 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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