CVE-2026-40293

OpenFGA Playground Preshared Key Exposure

CVSS 3.1 6.5 MEDIUMEUVD CVSS 3.1 7.5 CVSS 3.1 · [email protected] · Secondary 6.5 MEDIUMCVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary 7.5 HIGHCVSS_V3 Publisher rating MODERATEFixed by github.com/openfga/openfga 1.14.0osv · severity unknownFixed by github.com/openfga/openfga 1.14.0KEV status unknown

Original advisory

cve-program · CVE-2026-40293

Published

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.`

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euvd · EUVD-2026-23542

Published

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nvd · CVE-2026-40293

Published

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osv · GHSA-68m9-983m-f3v5

Published

### 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.`

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osv · GO-2026-5170

Published

OpenFGA: Unauthenticated playground endpoint discloses preshared API key in HTML response in github.com/openfga/openfga

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Affected versions, risk and source history

Exploitation and risk

Source status

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Risk history

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Advisory history

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15 Nov 2026 11:07:45 UTC