Is CVE-2026-40293 actively exploited?

No active exploitation of CVE-2026-40293 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40293 be exploited remotely?

Yes. CVE-2026-40293 is exploitable remotely over the network (CVSS attack vector: Network).

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

CVE-2026-40293 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-40293

CWE-200Published: April 17, 2026· Updated: Apr 20, 2026

6.5

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.5th

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.`

NVD Source

Technical Analysis

CVE-2026-40293 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.