CVE-2023-40579

Name: CVE-2023-40579
Creator: NVD / NIST
Published: 2023-08-25T20:15:08.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2023-40579 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. OpenFGA is an authorization/permission engine built for developers and inspired by Google Zanzibar. Some end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

OpenFGA is an authorization/permission engine built for developers and inspired by Google Zanzibar. Some end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. The vulnerability affects customers using `ListObjects` with specific models. The affected models contain expressions of type `rel1 from type1`. This issue has been patched in version 1.3.1.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.45%

35.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Openfga	Openfga	< 1.3.1

References

https://github.com/openfga/openfga/releases/tag/v1.3.1Release Notes
https://github.com/openfga/openfga/security/advisories/GHSA-jcf2-mxr2-gmqpVendor Advisory
https://github.com/openfga/openfga/releases/tag/v1.3.1Release Notes
https://github.com/openfga/openfga/security/advisories/GHSA-jcf2-mxr2-gmqpVendor Advisory

Timeline

Published: Aug 25, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40579?

How severe is CVE-2023-40579?

CVE-2023-40579 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40579?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40579?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST