{"schema":"threatline.record/2","record":{"id":"CVE-2026-112377","aliases":[],"summary":"CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack","details":"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.","categories":["Unclassified"],"product":"attested-tls-poc","vendor":"CCC-Attestation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-112377","source_modified_at":"2026-10-20T17:39:42.185Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"attested-tls-poc","vendor":"CCC-Attestation","versions":[{"version":"0","lessThanOrEqual":"731ca82ed533fc7a1092be980887ae2e34261da2","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.1,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00178,"percentile":0.07048,"score_date":"2026-10-23"},"published_at":"2026-10-19T17:26:39.111Z","modified_at":"2026-10-20T17:39:42.185Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-112377","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T17:39:42.185Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112377","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/CCC-Attestation/attested-tls-poc/pull/58","tags":["patch","technical-description","issue-tracking"]},{"source":"CVE List","url":"https://github.com/CCC-Attestation/attested-tls-poc/tree/5b6c5374b3fe8b671906c8ab32f6134d9c3da26d/relay-attacks-formal","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/ionut-arm/mbedtls/blob/f4ac7593826a506fc509c83cad73786acab1d442/library/ssl_tls13_generic.c#L430-L436","tags":["technical-description"]},{"source":"CVE List","url":"https://datatracker.ietf.org/doc/draft-intra-handshake-fail/","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/muhammad-usama-sardar/intra-handshake.fail","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/CCC-Attestation/attested-tls-poc","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/ccc-attestation-sig-attested-tls-poc-through-commit-731ca82-attestation-relay-attack","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-20T17:39:34.340105Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T17:39:42.185Z","content_hash":"df9af66c08fccb5601408912da20aaa0f391995d14b15dbd3cc808ca6e115d2f"}}