{"id":"CVE-2019-20399","details":"A timing vulnerability in the Scalar::check_overflow function in Parity libsecp256k1-rs before 0.3.1 potentially allows an attacker to leak information via a side-channel attack.","aliases":["GHSA-7cqg-8449-rmfv","RUSTSEC-2020-0156"],"modified":"2026-03-14T09:36:54.683603Z","published":"2020-01-23T00:15:09.953Z","references":[{"type":"FIX","url":"https://github.com/paritytech/libsecp256k1/commit/11ba23a9766a5079918cd9f515bc100bc8164b50"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bitcoin/secp256k1","events":[{"introduced":"0"},{"fixed":"346a053d4c442e08191f075c3932d03140579d47"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"0.3.1"}]}},{"type":"GIT","repo":"https://github.com/paritytech/libsecp256k1","events":[{"introduced":"0"},{"fixed":"11ba23a9766a5079918cd9f515bc100bc8164b50"}]}],"versions":["v0.1.15","v0.2.0","v0.2.2","v0.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20399.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:N/A:N"}]}