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TI-2026-62478 Aliases CVE-2026-92702

Origin validation error in ultravioletrs cocos

Priority HIGH 80CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-346.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00258 17th percentileScored 2026-11-07
Fix Fixed cocos (ultravioletrs): 0.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ultravioletrscocosbefore 0.9.00.9.0Patch availableCNA
  • cocos Vendorultravioletrs Affected before 0.9.0 Fixed in 0.9.0 Patch available CNA

Remediation

  • Fix · CNA cocos (ultravioletrs) Fixed in 0.9.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-92702

References

Other 4

  • TI-2026-62477 Origin validation error in ultravioletrs cocos CVSS 3.1CRITICAL 9.1
  • TI-2026-85492 Origin validation error in Cocos AI attestation CVSS 4.0CRITICAL 9.1
  • TI-2026-85493 Cocos AI attested TLS vulnerable to TOCTOU attacks after handshake CVSS 4.0HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences