CVE-2026-55689 Details
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.
A vulnerability in OpenFGA's OIDC authentication process allowed tokens from unrelated services to be accepted, bypassing audience validation. This issue was present in OpenFGA versions prior to 1.18.0, when the OIDC audience was not explicitly set, enabling improper authentication.
Upgrade to OpenFGA version 1.18.0 or later. After upgrading, ensure that both 'authn.oidc.issuer' and 'authn.oidc.audience' are set. OpenFGA will not start in OIDC mode unless these values are configured.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 10, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openfga helm charts | < 0.3.9 |
CPE
Remediation
| |
| openfga openfga | < 1.18.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | Initial Analysis | [email protected] |
| Jul 10, 2026 | CVE Modified | CISA-ADP |
| Jul 9, 2026 | New CVE Received | [email protected] |