CVE-2026-55689
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.41% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- openfga/helm charts · openfga/openfga
- Source
- security-advisories@github.com
References
- https://github.com/openfga/helm-chBroken Link
- https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9Product, Release Notes
- https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271Patch
- https://github.com/openfga/openfga/releases/tag/v1.18.0Product, Release Notes
- https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hvVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.