CVE-2026-55689

Summary

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.

Affected Software

Weaknesses

• CWE-287: CWE-287: Improper Authentication

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv
• 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/releases/tag/v1.18.0

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