OpenFGA up to 1.13.0 permission

Summaryinfo

A vulnerability, which was classified as critical, has been found in OpenFGA up to 1.13.0. This affects an unknown part. The manipulation leads to permission. This vulnerability is referenced as CVE-2026-33729. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenFGA up to 1.13.0 and classified as critical. This issue affects an unknown functionality. The manipulation with an unknown input leads to a permission vulnerability. Using CWE to declare the problem leads to CWE-275. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache key. This can result in OpenFGA reusing an earlier cached result for a different request. Users are affected if the model has relations which rely on condition evaluation andncaching is enabled. OpenFGA v1.13.1 contains a patch.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-33729 since 03/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

Upgrading to version 1.13.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 049b50ccd2cc7e163bd897f3d17a7b859ad146f8 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• OpenFGA

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13.0

License

• open-source

Website

• Product: https://github.com/openfga/openfga/

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