CVE-2026-40293
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
In OpenFGA versions 0.1.4 through 1.13.1, when using preshared-key authentication with the playground enabled, the API key is included in the HTML response of the /playground endpoint. This endpoint is enabled by default and does not require authentication, potentially leaking sensitive credentials.
Risk Assessment
The risk involves potential exposure of the preshared API key to unauthorized users who can access the /playground endpoint, which could lead to unauthorized access to the authorization system.
Recommendation
Upgrade OpenFGA to version 1.14.0 immediately, or disable the playground by running with --playground-enabled=false.
Original NVD description (English source)
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.`