{"id":"CVE-2020-13822","aliases":["CLSA-2026-1781139210","CLSA-2026-1792163848","DEBIAN-CVE-2020-13822","EUVD-2020-0571","GHSA-vh7m-p724-62c2","GHSA-vjh7-7g9h-fjfh","ROOT-APP-NPM-CVE-2020-13822","UBUNTU-CVE-2020-13822"],"status":"published","title":"Signature Malleabillity in elliptic","description":"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.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02705,"percentile":0.8606,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2020-06-04T14:01:53Z","modified":"2026-10-26T12:00:35Z","fixes":[{"ecosystem":"npm","package":"elliptic","fixed_in":["6.5.3"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:npm","package":"elliptic","fixed_in":["6.5.1-tuxcare.1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"node-elliptic","fixed_in":["6.5.3~dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"node-elliptic","fixed_in":["6.5.3~dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"node-elliptic","fixed_in":["6.5.3~dfsg-1"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"elliptic","fixed_in":["6.5.2-aikido.2"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"@rootio/elliptic","fixed_in":["6.5.2-root.io.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.3"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.1-tuxcare.0"},{"fixed":"6.4.1-tuxcare.1"}]}],"versions":["6.4.1"],"bundled":8},{"source":"osv","ecosystem":"TuxCare:npm","package":"elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.5.1-tuxcare.0"},{"fixed":"6.5.1-tuxcare.1"}]}],"versions":["6.5.1"]},{"source":"osv","ecosystem":"Debian:12","package":"node-elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.3~dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"node-elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.3~dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"node-elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.3~dfsg-1"}]}]},{"source":"osv","ecosystem":"npm","package":"elliptic","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.5.3"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.2-aikido.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.2-root.io.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"node-elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.4.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"node-elliptic","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.1~dfsg-1","6.5.1~dfsg-2"]}],"products":[{"vendor":"indutny","product":"elliptic"}],"references":[{"url":"https://www.npmjs.com/package/elliptic","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/indutny/elliptic/issues/226","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://medium.com/%40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13822","tags":["advisory"]},{"url":"https://medium.com/@herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4","tags":["web","report"]},{"url":"https://github.com/indutny/elliptic/commit/856fe4d99fe7b6200556e6400b3bf585b1721bec","tags":["web"]},{"url":"https://yondon.blog/2019/01/01/how-not-to-use-ecdsa","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vh7m-p724-62c2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-13822","tags":["advisory"]},{"url":"https://github.com/indutny/elliptic","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2020-13822","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-13822","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-13822","description":"The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding, leading '\\0' bytes, or integer overflows. 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This could conceivably have a security-relevant impact if an application relied on a single canonical signature.","status":"published","published":"2020-07-29T20:40:35Z","modified":"2024-10-16T17:02:47Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:38:11.479492Z"}],"nvd":[{"id":"CVE-2020-13822","description":"The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding, leading '\\0' bytes, or integer overflows. 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This could conceivably have a security-relevant impact if an application relied on a single canonical signature.","status":"published","published":"2020-06-04T15:15:13.51Z","modified":"2026-10-20T10:51:48.310913837Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:44:14.418339Z"},{"id":"DEBIAN-CVE-2020-13822","description":"The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding, leading '\\0' bytes, or integer overflows. 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