{"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":"2026-07-08T17:56:06.669853Z","published":"2020-06-22T12:15:10.087Z","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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kjur/jsrsasign","events":[{"introduced":"0"},{"last_affected":"6efc23aead22aa432613c345f84c39880f91744d"},{"fixed":"861ab2718b2bf8718830544c0e512cf127197316"},{"fixed":"6efc23aead22aa432613c345f84c39880f91744d"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"8.0.18"}],"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*"}}],"versions":["8.0.18","8.0.17","8.0.16","8.0.15","8.0.14","8.0.13","8.0.12","8.0.11","8.0.10","8.0.9","8.0.8","8.0.7","8.0.6","8.0.5","8.0.4","8.0.3","8.0.2","8.0.1","8.0.0","7.2.2","7.2.1","7.2.0","7.1.4","7.1.3","7.1.2","7.1.1","7.1.0","7.0.0","6.2.3","6.2.2","6.2.1","6.2.0","6.1.4","6.1.2","6.1.1","6.1.0","6.0.1","6.0.0","5.1.0","5.0.15","5.0.14","5.0.13","5.0.12","5.0.11","5.0.10","5.0.9","5.0.8","5.0.7","5.0.6","5.0.5","5.0.4","5.0.2","5.0.1","5.0.0","4.9.2","4.9.1","4.9.0","4.8.6","4.8.5","4.8.3","4.8.2","4.8.1","4.8.0","4.7.2","4.7.1","4.7.0","4.6.0","4.5.0","4.2.3","4.2.2","4.2.1","4.2.0","4.1.6","4.1.5","4.1.4","4.1.3","4.1.2","4.1.1","4.1.0","4.0.5","4.0.4","4.0.3","4.0.2","4.0.1","4.0.0","3.1.5","3.1.4","3.1.3","3.1.2","3.1.1","3.1.0","3.0.5","3.0.4","3.0.3","3.0.2","3.0.1","3.0.0","2.0.0","1.3.1","1.3.0","1.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14966.json"}}],"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"}]}