{"id":"CVE-2026-112377","state":"PUBLISHED","title":"CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack","description":"CCC Attestation SIG attested-tls-poc through commit 731ca82 fails to bind early attestation Evidence to the TLS connection, allowing attackers to relay valid Evidence from a genuine attester. Attackers holding an extracted attested TLS private key can forward the relying party's nonce to a genuine attester and replay its Evidence to impersonate the attested workload and intercept data.","publishedAt":"2026-10-19T17:26:39.111Z","updatedAt":"2026-10-20T17:39:42.185Z","severity":{"score":9.1,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["CCC-Attestation attested-tls-poc"],"affected":[{"vendor":"CCC-Attestation","product":"attested-tls-poc","packageURL":"pkg:github/ccc-attestation/attested-tls-poc","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"731ca82ed533fc7a1092be980887ae2e34261da2","versionType":"git"}],"collectionURL":"https://github.com/CCC-Attestation/attested-tls-poc","repo":"https://github.com/CCC-Attestation/attested-tls-poc"}],"references":["https://github.com/CCC-Attestation/attested-tls-poc/pull/58","https://github.com/CCC-Attestation/attested-tls-poc/tree/5b6c5374b3fe8b671906c8ab32f6134d9c3da26d/relay-attacks-formal","https://github.com/ionut-arm/mbedtls/blob/f4ac7593826a506fc509c83cad73786acab1d442/library/ssl_tls13_generic.c#L430-L436","https://datatracker.ietf.org/doc/draft-intra-handshake-fail/","https://github.com/muhammad-usama-sardar/intra-handshake.fail","https://github.com/CCC-Attestation/attested-tls-poc","https://www.vulncheck.com/advisories/ccc-attestation-sig-attested-tls-poc-through-commit-731ca82-attestation-relay-attack"],"weaknesses":["CWE-346"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/112xxx/CVE-2026-112377.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-112377","state":"PUBLISHED","datePublished":"2026-10-19T17:26:39.111Z","dateUpdated":"2026-10-20T17:39:42.185Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-19T16:30:42.240Z"},"containers":{"cna":{"title":"CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack","descriptions":[{"lang":"en","value":"CCC Attestation SIG attested-tls-poc through commit 731ca82 fails to bind early attestation Evidence to the TLS connection, allowing attackers to relay valid Evidence from a genuine attester. 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