---
id: CVE-2026-55170
title: OpenFGA Improper Policy Enforcement
summary: OpenFGA Improper Policy Enforcement
severity: low
cwe:
  - CWE-178
vendor: openfga
product: github.com/openfga/openfga
affected:
  - github.com/openfga/openfga < 1.18.0
patched:
  - github.com/openfga/openfga 1.18.0
published: '2026-06-18'
updated: '2026-06-18'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-cf98-j28v-49v6'
references:
  - url: 'https://github.com/openfga/openfga/security/advisories/GHSA-cf98-j28v-49v6'
  - url: 'https://github.com/advisories/GHSA-cf98-j28v-49v6'
tags:
  - ghsa
  - go
ingestedAt: '2026-06-19T03:39:00.797Z'
ecosystem: go
epss: 0.00339
epssPercentile: 0.24537
---

## Overview

## Description

In OpenFGA, when MySQL is being used as the datastore, two distinct check requests can return the same response.

## Preconditions

This applies if the following preconditions are met:

1. You run OpenFGA with MySQL as the datastore
2. Your authorization decisions rely on case-sensitive user strings.

## Fix
Upgrade to OpenFGA 1.18.0 or greater.

## Acknowledgements
OpenFGA would like to thank @sahajamoth for the detailed report.

## Affected packages

- `github.com/openfga/openfga < 1.18.0`

## Remediation

Upgrade to a patched release:

- `github.com/openfga/openfga 1.18.0`