OpenFGA 0.1.41.13.1: Preshared Key Leak in /playground
CVE-2026-40293 Published on April 17, 2026

OpenFGA Playground Preshared Key Exposure
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

Vulnerability Analysis

CVE-2026-40293 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Types

What is an Information Disclosure Vulnerability?

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

CVE-2026-40293 has been classified to as an Information Disclosure vulnerability or weakness.

Insertion of Sensitive Information Into Sent Data

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. Sensitive information could include data that is sensitive in and of itself (such as credentials or private messages), or otherwise useful in the further exploitation of the system (such as internal file system structure).


Products Associated with CVE-2026-40293

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-40293 are published in these products:

Openfga
 
Red Hat Multicluster Globalhub
 
Red Hat Acm
 
Red Hat Ceph Storage
 

Affected Versions

openfga: Red Hat Multicluster Global Hub 1.7.1: Red Hat Advanced Cluster Management for Kubernetes 2.15: Red Hat Ceph Storage 6: Red Hat Ceph Storage 9:

Exploit Probability

EPSS
0.20%
Percentile
10.28%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.