Is CVE-2026-40293 actively exploited?

CVE-2026-40293 has no public evidence of in-the-wild exploitation as of 2026-04-27.

What is the CVSS score for CVE-2026-40293?

CVE-2026-40293 has a CVSS score of 6.5 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

How do I patch CVE-2026-40293?

Patch guidance is available from openfga security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-40293.

CVE-2026-40293 - remediation guidance & executive summary

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.`

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-200 · Information Disclosure

Metadata

Primary Vendor: OPENFGA
Published: 4/17/2026
Last Modified: 4/27/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-40293

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary