{"cve":"CVE-2020-1947","nvd":{"published":"2020-03-11T21:15:11.627","modified":"2026-06-17T03:02:42.010","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-502"],"references":["https://lists.apache.org/thread.html/r4a61a24c119bd820da6fb02100d286f8aae55c8f9b94a346b9bb27d8%40%3Cdev.shardingsphere.apache.org%3E","https://lists.apache.org/thread.html/r4a61a24c119bd820da6fb02100d286f8aae55c8f9b94a346b9bb27d8%40%3Cdev.shardingsphere.apache.org%3E"],"products":["apache:shardingsphere"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2020-1947","score":0.33918,"percentile":0.98393,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v54f-xcmp-43cr","url":"https://osv.dev/vulnerability/GHSA-v54f-xcmp-43cr","summary":"Deserialization of Untrusted Data in Apache ShardingSphere","modified":"2023-11-08T04:02:46.619106Z","packages":[{"ecosystem":"Maven","name":"org.apache.shardingsphere:shardingsphere","purl":"pkg:maven/org.apache.shardingsphere/shardingsphere","ranges":[">=4.0.0-RC3 <4.0.1"],"fixed":["4.0.1"]}]}],"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."]}