{"id":"CVE-2020-1947","aliases":["GHSA-v54f-xcmp-43cr"],"url":"https://o3.security/vulnerability/CVE-2020-1947","summary":"Deserialization of Untrusted Data in Apache ShardingSphere","details":"In Apache ShardingSphere(incubator) 4.0.0-RC3 and 4.0.0, the ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows to unmarshal data to a Java type By using the YAML tag. Unmarshalling untrusted data can lead to security flaws of RCE.","published":"2020-03-11T21:15:11.627Z","modified":"2026-07-08T20:30:23.185749Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.33918,"percentile":0.98311,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":4,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.shardingsphere:shardingsphere","fixedVersion":"4.0.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r4a61a24c119bd820da6fb02100d286f8aae55c8f9b94a346b9bb27d8%40%3Cdev.shardingsphere.apache.org%3E"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:30:23.185749Z"}}