CVE-2026-40293

Summary

OpenFGA is an authorization/permission engine built for developers. In versions 0.1.4 through 1.13.1, when OpenFGA is configured to use preshared-key authentication with the built-in playground enabled, the local server includes the preshared API key in the HTML response of the /playground endpoint. The /playground endpoint is enabled by default and does not require authentication. It is intended for local development and debugging and is not designed to be exposed to production environments. Only those who run OpenFGA with --authn-method preshared, with the playground enabled, and with the playground endpoint accessible beyond localhost or trusted networks are vulnerable. To remediate the issue, users should upgrade to OpenFGA v1.14.0, or disable the playground by running ./openfga run --playground-enabled=false.

Affected Software

Weaknesses

• CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

OpenFGA: github.com/openfga/openfga: OpenFGA: Information disclosure of preshared API key via playground endpoint

Additional References

• https://access.redhat.com/security/cve/CVE-2026-40293
• https://bugzilla.redhat.com/show_bug.cgi?id=2459341
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40293.json
• https://access.redhat.com/errata/RHSA-2026:24503
• https://access.redhat.com/errata/RHSA-2026:24539

References

• https://github.com/openfga/openfga/security/advisories/GHSA-68m9-983m-f3v5
• https://github.com/openfga/openfga/releases/tag/v1.14.0

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