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Vulnerability · Published Apr 17, 2026 · Assigned by GitHub_M

CVE-2026-40293OpenFGA Playground Preshared Key Exposure

Medium 6.5

In plain English

A medium-severity information exposure in openfga from openfga. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 78.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/openfga/openfga1.14.0GHSA-68m9-983m-f3v5
Gogithub.com/openfga/openfga1.14.0GO-2026-5170

Affected products (as reported)

VendorProductVersions
openfga openfga >= 0.1.4, < 1.14.0

Weakness: CWE-200, CWE-201 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References