{"id":"CVE-2020-14966","details":"An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.","aliases":["GHSA-p8c3-7rj8-q963"],"modified":"2026-05-17T11:53:57.957321335Z","published":"2020-06-22T12:15:10.087Z","database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/kjur/jsrsasign/releases/tag/8.0.17"},{"type":"ADVISORY","url":"https://github.com/kjur/jsrsasign/releases/tag/8.0.18"},{"type":"ADVISORY","url":"https://kjur.github.io/jsrsasign/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200724-0001/"},{"type":"ADVISORY","url":"https://www.npmjs.com/package/jsrsasign"},{"type":"REPORT","url":"https://github.com/kjur/jsrsasign/issues/437"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}