CVE-2026-119345
Cocos AI Intra-handshake attested TLS implementation is vulnerable to TOCTOU Attacks
Cocos AI is a confidential computing system for AI. Prior to 0.9.0, Cocos AI performs attestation only once when an attested TLS connection is established. An attacker who can modify the attester's workload code, memory-backed state, configuration, or attached devices after that check can keep the existing connection open while the peer continues trusting stale initial Evidence. This gap is especially significant for long-lived connections because the verifier has no mechanism to detect the changed state. This issue is fixed in version 0.9.0.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| cocos ultravioletrs |
< 0.9.0 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 7.2 high |
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/ultravioletrs/cocos/security/advisories/GHSA-ghwv-vrp2-2975CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/ultravioletrs/cocos/pull/582CNA: GitHub_M · x_refsource_MISC
- https://github.com/ultravioletrs/cocos/commit/80bf813c48300f02259b338b91f844c71be582eaCNA: GitHub_M · x_refsource_MISC
- https://github.com/ultravioletrs/cocos/releases/tag/v0.9.0CNA: GitHub_M · x_refsource_MISC
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