Vulnerability Report

CVE-2026-92701

Title: Cocos AI: Intel TDX attestation freshness bypass

Other

Proof Of Concept

PoC Available for CVE-2026-92701

CWE Category CWE-346

Published Date Sep 18, 2026

Modified Date Sep 24, 2026

Exploit Status Available

Score 9.1 CVSS v3.1

Exploit Probability (EPSS)

0.27%

Vulnerability Summary

CVE-2026-92701: 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) Intel TDX verification path does not copy the expected current-session freshness value into the TDX quote-body policy before quote validation, so structurally valid TDX QuoteV4 Evidence is accepted without checking that its REPORT_DATA field matches the reportData expected for the current session. A relying party using this path can therefore accept Evidence with a mismatched or reused reportData and release application data after the handshake, enabling session-misbinding to an unintended attestation context. The issue is fixed in version 0.9.0.

Impacted Vendors

Analysis in Progress...

Reference Links

https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0 https://github.com/ultravioletrs/cocos/security/advisories/GHSA-4px3-wj2x-xx47

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns