{"id":"CVE-2026-92702","state":"PUBLISHED","title":"Cocos AI: Intra-handshake attested TLS implementation can accept Evidence with nil, empty, or omitted reportData in the AMD SEV-SNP path","description":"Cocos AI is a confidential computing system for AI. In Cocos AI 0.8.2 and earlier, VerifyAttestationReportTLS in the AMD SEV-SNP verifier sets Policy.ReportData only when its caller supplies non-empty expected reportData. A relying-party integration that passes nil or empty expected reportData while relying on that value for current-session freshness can therefore accept SEV-SNP evidence unrelated to the current connection and make a trust, authorization, or application-data release decision for an unintended attestation context. This issue was fixed in Cocos AI 0.9.0 by removing the affected verifier path as part of the migration to post-handshake attestation.","publishedAt":"2026-09-18T17:02:48.370Z","updatedAt":"2026-10-13T20:08:52.222Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ultravioletrs cocos"],"affected":[{"vendor":"ultravioletrs","product":"cocos","versions":[{"version":"< 0.9.0","status":"affected"}]}],"references":["https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4r6g-mp48-j2rw","https://github.com/ultravioletrs/cocos/pull/582","https://github.com/ultravioletrs/cocos/commit/80bf813c48300f02259b338b91f844c71be582ea","https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0"],"weaknesses":["CWE-346"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92702.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92702","state":"PUBLISHED","datePublished":"2026-09-18T17:02:48.370Z","dateUpdated":"2026-10-13T20:08:52.222Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-16T16:22:31.542Z"},"containers":{"cna":{"title":"Cocos AI: Intra-handshake attested TLS implementation can accept Evidence with nil, empty, or omitted reportData in the AMD SEV-SNP path","descriptions":[{"lang":"en","value":"Cocos AI is a confidential computing system for AI. In Cocos AI 0.8.2 and earlier, VerifyAttestationReportTLS in the AMD SEV-SNP verifier sets Policy.ReportData only when its caller supplies non-empty expected reportData. A relying-party integration that passes nil or empty expected reportData while relying on that value for current-session freshness can therefore accept SEV-SNP evidence unrelated to the current connection and make a trust, authorization, or application-data release decision for an unintended attestation context. This issue was fixed in Cocos AI 0.9.0 by removing the affected verifier path as part of the migration to post-handshake attestation."}],"affected":[{"vendor":"ultravioletrs","product":"cocos","versions":[{"version":"< 0.9.0","status":"affected"}]}],"references":[{"url":"https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4r6g-mp48-j2rw","name":"https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4r6g-mp48-j2rw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ultravioletrs/cocos/pull/582","name":"https://github.com/ultravioletrs/cocos/pull/582","tags":["x_refsource_MISC"]},{"url":"https://github.com/ultravioletrs/cocos/commit/80bf813c48300f02259b338b91f844c71be582ea","name":"https://github.com/ultravioletrs/cocos/commit/80bf813c48300f02259b338b91f844c71be582ea","tags":["x_refsource_MISC"]},{"url":"https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0","name":"https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-346","lang":"en","description":"CWE-346: Origin Validation Error","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-13T20:08:52.222Z"},"source":{"advisory":"GHSA-4r6g-mp48-j2rw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4r6g-mp48-j2rw","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T15:05:11.173074Z","id":"CVE-2026-92702","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-22T15:05:43.497Z"}}]}}}