CVE-2026-92792

high

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.

References

https://www.vulncheck.com/advisories/opennhp-through-1.0.2-authentication-bypass-via-fallback-verifier

https://github.com/OpenNHP/opennhp/issues/1732

https://github.com/OpenNHP/opennhp/blob/v1.0.2/nhp/core/verifier/verifier.go#L27-L92

https://github.com/OpenNHP/opennhp

Details

Source: Mitre, NVD

Published: 2026-09-16

Updated: 2026-09-19

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00453