{"id":"CVE-2026-76234","state":"PUBLISHED","title":"libcrux before 0.0.6 Cryptographic Implementation Bug Fixes","description":"libcrux-ecdh and libcrux-ed25519 before 0.0.6, and libcrux-psq before 0.0.7, contain cryptographic implementation bugs. libcrux-ecdh did not properly check length and clamping during X25519 secret validation (and had a broken clamping check for imported X25519 secret keys); libcrux-ed25519 performed a duplicated clamping step during key generation; and libcrux-psq panicked instead of propagating an AEADError. These were fixed in the respective patched releases.","publishedAt":"2026-08-19T14:02:14.481Z","updatedAt":"2026-08-21T11:21:07.741Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["celabshq libcrux-ecdh","celabshq libcrux-ed25519","celabshq libcrux-psq"],"affected":[{"vendor":"celabshq","product":"libcrux-ecdh","packageURL":"pkg:cargo/libcrux-ecdh","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.0.6","versionType":"semver"},{"version":"0.0.6","status":"unaffected","versionType":"semver"}]},{"vendor":"celabshq","product":"libcrux-ed25519","packageURL":"pkg:cargo/libcrux-ed25519","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.0.6","versionType":"semver"},{"version":"0.0.6","status":"unaffected","versionType":"semver"}]},{"vendor":"celabshq","product":"libcrux-psq","packageURL":"pkg:cargo/libcrux-psq","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.0.7","versionType":"semver"},{"version":"0.0.7","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/celabshq/libcrux/security/advisories/GHSA-435g-fcv3-8j26","https://www.vulncheck.com/advisories/libcrux-before-cryptographic-implementation-bug-fixes"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/76xxx/CVE-2026-76234.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-76234","state":"PUBLISHED","datePublished":"2026-08-19T14:02:14.481Z","dateUpdated":"2026-08-21T11:21:07.741Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-19T11:36:02.574Z"},"containers":{"cna":{"title":"libcrux before 0.0.6 Cryptographic Implementation Bug Fixes","descriptions":[{"lang":"en","value":"libcrux-ecdh and libcrux-ed25519 before 0.0.6, and libcrux-psq before 0.0.7, contain cryptographic implementation bugs. libcrux-ecdh did not properly check length and clamping during X25519 secret validation (and had a broken clamping check for imported X25519 secret keys); libcrux-ed25519 performed a duplicated clamping step during key generation; and libcrux-psq panicked instead of propagating an AEADError. 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