{"id":"CVE-2019-7167","details":"Zcash, before the Sapling network upgrade (2018-10-28), had a counterfeiting vulnerability. A key-generation process, during evaluation of polynomials related to a to-be-proven statement, produced certain bypass elements. Availability of these elements allowed a cheating prover to bypass a consistency check, and consequently transform the proof of one statement into an ostensibly valid proof of a different statement, thereby breaking the soundness of the proof system. This misled the original Sprout zk-SNARK verifier into accepting the correctness of a transaction.","modified":"2026-03-14T09:37:35.103739Z","published":"2019-03-27T02:29:00.250Z","references":[{"type":"ADVISORY","url":"http://fortune.com/2019/02/05/zcash-vulnerability-cryptocurrency/"},{"type":"ADVISORY","url":"https://z.cash/blog/zcash-counterfeiting-vulnerability-successfully-remediated/"},{"type":"PACKAGE","url":"https://github.com/JinBean/CVE-Extension"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zcash/zcash","events":[{"introduced":"0"},{"last_affected":"e8f5e592b864b341391c9becf80bbe3e0e930a33"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.0.1"}]}}],"versions":["bitcoin-v0.11.2","v0.11.2.z0","v0.11.2.z1","v0.11.2.z2","v0.11.2.z3","v0.11.2.z4","v0.11.2.z5","v0.11.2.z6","v0.11.2.z7","v0.11.2.z8","v0.11.2.z9","v0.9.0rc2","v1.0.0","v1.0.0-beta1","v1.0.0-beta2","v1.0.0-rc1","v1.0.0-rc2","v1.0.0-rc3","v1.0.0-rc4","v1.0.1","v1.0.10","v1.0.10-1","v1.0.11","v1.0.11-rc1","v1.0.12","v1.0.12-rc1","v1.0.13","v1.0.13-rc1","v1.0.13-rc2","v1.0.14","v1.0.14-rc1","v1.0.15","v1.0.15-rc1","v1.0.2","v1.0.3","v1.0.4","v1.0.5","v1.0.6","v1.0.7-1","v1.0.8","v1.0.8-1","v1.0.9","v1.1.0","v1.1.0-rc1","v1.1.1","v1.1.1-rc1","v1.1.1-rc2","v1.1.2","v1.1.2-rc1","v2.0.0","v2.0.0-rc1","v2.0.1","v2.0.1-rc1","zc.v0.11.2.z0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-7167.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}