GitHub Advisoryadvisory · Go

GHSA-68m9-983m-f3v5 OpenFGA: Unauthenticated playground endpoint discloses preshared API key in HTML response

MEDIUM Published 2026-04-08 Modified 2026-04-24 Official page ↗
Aliases
CVE-2026-40293
Ecosystem
Go
Packages
github.com/openfga/openfga
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weaknesses
CWE-200
Reviewed
2026-04-08

Affected packages

• Go github.com/openfga/openfga: >= 0.1.4, < 1.14.0 → fixed in 1.14.0

Description

Description 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. Am I Affected? You are affected if you meet each of the following preconditions: • You are running OpenFGA with --authn-method preshared, and • The playground is enabled, and • The playground endpoint is accessible beyond localhost or trusted networks. Fix Upgrade to OpenFGA v1.14.0, or disable the playground by running `./openfga run --playground-enabled=false.`

Related

Alias · CVE (1)

  • CVE-2026-40293 OpenFGA is an authorization/permission engine built for developers. vulnerability

Weakness · CWE (1)

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

References