CVE-2026-55689
OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset
- State
- Published
- Severity
- 6.8 Medium
- Published
- Jul 9, 2026
- Updated
- Jul 10, 2026
- Reserved
- Jun 17, 2026
Description
OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
openfgaopenfga |
|
References
- https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv
- https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271
- https://github.com/openfga/helm-ch
- https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9
- https://github.com/openfga/openfga/releases/tag/v1.18.0
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