{"id":"CVE-2020-13822","details":"The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding, leading '\\0' bytes, or integer overflows. This could conceivably have a security-relevant impact if an application relied on a single canonical signature.","aliases":["GHSA-vh7m-p724-62c2"],"modified":"2026-07-08T20:30:26.993039Z","published":"2020-06-04T15:15:13.510Z","references":[{"type":"WEB","url":"https://medium.com/%40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4"},{"type":"ADVISORY","url":"https://www.npmjs.com/package/elliptic"},{"type":"ADVISORY","url":"https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/"},{"type":"EVIDENCE","url":"https://github.com/indutny/elliptic/issues/226"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/indutny/elliptic","events":[{"introduced":"60489415e545efdfd3010ae74b9726facbf08ca8"},{"last_affected":"60489415e545efdfd3010ae74b9726facbf08ca8"}],"database_specific":{"source":"CPE_STRING","cpe":"cpe:2.3:a:indutny:elliptic:6.5.2:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"6.5.2"},{"last_affected":"6.5.2"}]}}],"versions":["6.5.2","v6.5.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13822.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"}]}