CVE-2023-40579
OpenFGA Authorization Bypass
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
OpenFGA Authorization Bypass
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.
- Record
CVE-2023-40579- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2023-2315
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.
- Record
EUVD-2023-2315- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jcf2-mxr2-gmqp
OpenFGA Authorization Bypass
Overview
Some end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. This means that the API sometimes returns more objects than it should.
Am I Affected?
The vulnerability affects customers using ListObjects with specific models. The affected models contain expressions of type rel1 from type1.
Fix
Update to v1.3.1.
Backward Compatibility
This update is backward compatible.
- Record
GHSA-jcf2-mxr2-gmqp- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-40579- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
OSV
OpenFGA Authorization Bypass
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.
- Record
CVE-2023-40579- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
OSVGHSA-jcf2-mxr2-gmqp
OpenFGA Authorization Bypass
Overview
Some end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. This means that the API sometimes returns more objects than it should.
Am I Affected?
The vulnerability affects customers using ListObjects with specific models. The affected models contain expressions of type rel1 from type1.
Fix
Update to v1.3.1.
Backward Compatibility
This update is backward compatible.
- Record
GHSA-jcf2-mxr2-gmqp- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
OSVGO-2023-2028 No score
OpenFGA Authorization Bypass in github.com/openfga/openfga
OpenFGA Authorization Bypass in github.com/openfga/openfga
- Record
GO-2023-2028- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/openfga/openfgaGo |
before 1.3.1 | 1.3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-40579 is a medium vulnerability (CVSS 6.5) in Openfga, published August 25, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.55%, the 45th percentile. Fixed in github.com/openfga/openfga 1.3.1.