CVE-2026-40946

CRITICAL

Oxia: OIDC token audience validation bypass via SkipClientIDCheck

Title source: cna

Description

Oxia is a metadata store and coordination system. Prior to 0.16.2, the OIDC authentication provider unconditionally sets SkipClientIDCheck: true in the go-oidc verifier configuration, disabling the standard audience (aud) claim validation at the library level. This allows tokens issued for unrelated services by the same OIDC issuer to be accepted by Oxia. This vulnerability is fixed in 0.16.2.

References (1)

[X_Refsource_Confirm] https://github.com/oxia-db/oxia/security/advisories/GHSA-fhvp-9hcj-6m33

Scores

CVSS v4 9.2

EPSS 0.0006

EPSS Percentile 18.3%

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-287

Status published

Products (1)

oxia-db/oxia < 0.16.2

Published Apr 21, 2026

Tracked Since Apr 22, 2026