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CVE

CVE-2026-92702

Cocos AI: Intra-handshake attested TLS implementation can accept Evidence with nil, empty, or omitted reportData in the AMD SEV-SNP path
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CVE

CVE-2026-92702

Cocos AI: Intra-handshake attested TLS implementation can accept Evidence with nil, empty, or omitted reportData in the AMD SEV-SNP path

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92702.json, https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4r6g-mp48-j2rw, https://nvd.nist.gov/vuln/detail/CVE-2026-92702, https://github.com/ultravioletrs/cocos/commit/80bf813c48300f02259b338b91f844c71be582ea, https://github.com/ultravioletrs/cocos/pull/582

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00258%
EPSS Percentile
0.16412%
Introduced Version
0
Fix Available
b44780df95a34cf0906c6af9d06e94f56e4811f2

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