Is CVE-2026-55689 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-55689?

CVE-2026-55689 has a CVSS v3 severity of MEDIUM (6.8).

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CVE-2026-55689

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.