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GHSA-mgh9-4mwp-fg55

MediumCVSS 5.8 / 10
Published Aug 18, 2025·Last modified Aug 29, 2025
Affected Components(0)

No affected components available

Description

Overview

OpenFGA v1.9.3 to v1.9.4 ( openfga-0.2.40 <= Helm chart <= openfga-0.2.41, v1.9.3 <= docker <= v.1.9.4) are vulnerable to improper policy enforcement when certain Check and ListObject calls are executed.

Am I Affected?

You are affected by this vulnerability if you are using OpenFGA v1.9.3 to v1.9.4, specifically under the following preconditions:

  • Calling Check API or ListObjects with an authorization model that has a relationship directly assignable by more than 1 userset with same type, and
  • There are check or list object queries that rely on the above relationship, and
  • You have userset tuples that are assigned to the above relationship

Fix

Upgrade to v1.9.5. This upgrade is backwards compatible.

Workaround

Downgrade to v1.9.2 with enable-check-optimizations removed from OPENFGA_EXPERIMENTALS

Acknowledgments

OpenFGA would like Dominic Harries and rrozza-apolitical to thank for discovering this vulnerability.

Risk Scores
Base Score
5.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
1.5

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.32%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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