Description
OpenNHP through 1.0.2 selects its trusted-execution attestation verifier based on attacker-supplied evidence containing a test_purpose key, causing the FallbackVerifier to execute unconditionally. Attackers can bypass attestation verification by including the test_purpose key in evidence and providing enrolled measure and serial number pairs from the allowlist to gain unauthorized access.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| OpenNHP | opennhp | <= 1.0.2 |
References
- https://github.com/OpenNHP/opennhp
- https://github.com/OpenNHP/opennhp/blob/v1.0.2/nhp/core/verifier/verifier.go#L27-L92
- https://github.com/OpenNHP/opennhp/issues/1732
- https://www.vulncheck.com/advisories/opennhp-through-1.0.2-authentication-bypass-via-fallback-verifier
- https://github.com/OpenNHP/opennhp/issues/1732
Timeline
- Published
- Sep 16, 2026
- Last modified
- Sep 22, 2026
- NVD status
- Awaiting Analysis