CVE-2026-55689

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
6.8 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
openfgaopenfga
𝑥
< 1.18.0
CNA
Common Weakness Enumeration
References
https://github.com/openfga/helm-ch
https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9
https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271
https://github.com/openfga/openfga/releases/tag/v1.18.0
https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv