{"cve":"CVE-2020-1953","nvd":{"published":"2020-03-13T15:15:11.373","modified":"2026-06-17T03:02:42.647","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":[],"references":["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","https://www.oracle.com/security-alerts/cpuoct2020.html","https://lists.apache.org/thread.html/d0e00f2e147a9e9b13a6829133092f349b2882bf6860397368a52600%40%3Cannounce.tomcat.apache.org%3E"],"products":["apache:commons_configuration","oracle:database_server","oracle:healthcare_foundation"],"source":"nvd","synced_at":"2026-10-19T21:03:08.679916934+00:00"},"epss":{"cve":"CVE-2020-1953","score":0.06323,"percentile":0.93623,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-7qx4-pp76-vrqh","url":"https://osv.dev/vulnerability/GHSA-7qx4-pp76-vrqh","summary":"Remote code execution in Apache Commons Configuration","modified":"2023-11-08T04:02:46.926629Z","packages":[{"ecosystem":"Maven","name":"org.apache.commons:commons-configuration2","purl":"pkg:maven/org.apache.commons/commons-configuration2","ranges":[">=2.2 <2.7"],"fixed":["2.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}