GHSA-hcxc-wf8j-23hv

Dashboard / Vulnerabilities / GHSA-hcxc-wf8j-23hv

GHSA-hcxc-wf8j-23hv

Summary: OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset

Details: ## Description OpenFGA's OIDC authenticator skipped JWT audience (`aud`) validation when no audience was configured. In deployments where one identity provider issues tokens for multiple services, a token minted for an unrelated service could authenticate to OpenFGA. ## Preconditions This applies if the following preconditions are met: 1. You run OpenFGA with `authn.method` set to `oidc`. 2. You configured `authn.oidc.issuer` but did **not** set `authn.oidc.audience` (`--authn-oidc-audience` / `OPENFGA_AUTHN_OIDC_AUDIENCE`). ## Fix Upgrade to OpenFGA 1.18.0 or greater. OpenFGA now refuses to start in `oidc` mode unless both `authn.oidc.issuer` and `authn.oidc.audience` are set, and the `aud` claim is always validated. ## Acknowledgements OpenFGA would like to thank https://github.com/0xVijay for the report.

References: https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv, https://nvd.nist.gov/vuln/detail/CVE-2026-55689, 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, https://github.com/openfga/openfga/releases/tag/v1.18.0