CVE-2026-92701: Ultravioletrs Cocos

Critical severity, CVSS 9.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Ultravioletrs Cocos: before 0.9.0 (fixed in 0.9.0)

Published 2026-09-18. Last modified 2026-09-24.