CVE-2026-92702

critical

Description

Cocos AI is a confidential computing system for running AI workloads inside trusted execution environments. In versions up to and including 0.8.2, the intra-handshake attested TLS (aTLS) AMD SEV-SNP verification path does not enforce attestation freshness when the expected reportData value is nil, empty, or omitted, leaving the SEV-SNP policy ReportData unset so the verifier accepts unrelated or stale Evidence not bound to the current connection. A relying party that uses this path without an expected reportData as a trust or authorization decision can be induced to trust an unintended attestation context; a supplied non-empty reportData is still validated. The issue is fixed in version 0.9.0.

References

https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4r6g-mp48-j2rw

https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0

https://github.com/ultravioletrs/cocos/pull/582

https://github.com/ultravioletrs/cocos/commit/80bf813c48300f02259b338b91f844c71be582ea

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-83192

Details

Source: Mitre, NVD

Published: 2026-09-18

Updated: 2026-09-24

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00205