{"id":"GHSA-m95p-425x-x889","summary":"cggmp21 has a missing check in the ZK proof used in CGGMP21","details":"### Impact\ncggmp21  concerns a missing check in the ZK proof that enables an attack in which a single malicious signer can reconstruct full private key.\n\n### Patches\n* `cggmp21 v0.6.3` is a patch release that contains a fix that introduces this specific missing check\n* However, cggmp21 recommends upgrading to `cggmp24 v0.7.0-alpha.2` which contains many other security checks as a precaution. Follow [migration guideline](https://github.com/LFDT-Lockness/cggmp21/blob/v0.7.0-alpha.2/CGGMP21_MIGRATION.md) to upgrade.\n\n### Workarounds\nUpdate to `cggmp21 v0.6.3`, a minor release that contains a minimal security patch.\n\nHowever, for full mitigation, users will need to upgrade to `cggmp24 v0.7.0-alpha.2` as it contains many more security check implementations.\n\n### Resources\nRead this [blog post](https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained) to learn more.","aliases":["CVE-2025-66016","RUSTSEC-2025-0129","RUSTSEC-2025-0130"],"modified":"2025-11-27T09:16:27.373336Z","published":"2025-11-25T20:41:04Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-11-25T20:41:04Z","nvd_published_at":"2025-11-25T20:16:00Z","cwe_ids":["CWE-345","CWE-347"],"severity":"CRITICAL"},"references":[{"type":"WEB","url":"https://github.com/LFDT-Lockness/cggmp21/security/advisories/GHSA-m95p-425x-x889"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66016"},{"type":"WEB","url":"https://github.com/LFDT-Lockness/cggmp21/commit/60e0ada5291e771d5649793329d99edd32285e72"},{"type":"PACKAGE","url":"https://github.com/LFDT-Lockness/cggmp21"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2025-0129.html"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2025-0130.html"},{"type":"WEB","url":"https://www.dfns.co/article/cggmp21-vulnerabilities-patched-and-explained"}],"affected":[{"package":{"name":"cggmp21","ecosystem":"crates.io","purl":"pkg:cargo/cggmp21"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.6.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-m95p-425x-x889/GHSA-m95p-425x-x889.json"}},{"package":{"name":"cggmp24","ecosystem":"crates.io","purl":"pkg:cargo/cggmp24"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.7.0-alpha.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-m95p-425x-x889/GHSA-m95p-425x-x889.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}