CVE-2026-40946 Details
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.
A vulnerability in Oxia, a metadata store and coordination system, allows for audience validation bypass in OpenID Connect (OIDC) authentication. Prior to version 0.16.2, the OIDC authentication provider automatically set SkipClientIDCheck to true, disabling standard validation of the audience claim at the library level. This flaw permitted tokens issued for different services by the same OIDC issuer to be accepted by Oxia, undermining the intended audience isolation of OAuth2/OIDC.
The vulnerability has been fixed in Oxia version 0.16.2. Users should upgrade to this version. Additionally, it is recommended to ensure network-level isolation so that only trusted services can access the Oxia gRPC endpoints.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 21, 2026CISA-ADP
Assessed Apr 22, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/oxia-db/oxia/security/advisories/GHSA-fhvp-9hcj-6m33 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Oxia | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 21, 2026 | New CVE Received | [email protected] |