OpenFGA up to 1.8.4 improper authorization

Summaryinfo

A vulnerability marked as critical has been reported in OpenFGA up to 1.8.4. This vulnerability affects unknown code. The manipulation leads to improper authorization. This vulnerability is documented as CVE-2025-25196. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenFGA up to 1.8.4 and classified as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. 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. OpenFGA < v1.8.4 (Helm chart < openfga-0.2.22, docker < v.1.8.4) are vulnerable to authorization bypass when certain Check and ListObject calls are executed. Users on OpenFGA v1.8.4 or previous, specifically under the following conditions are affected by this authorization bypass vulnerability: 1. Calling Check API or ListObjects with a model that has a relation directly assignable to both public access AND userset with the same type. 2. A type bound public access tuple is assigned to an object. 3. userset tuple is not assigned to the same object. and 4. Check request's user field is a userset that has the same type as the type bound public access tuple's user type. Users are advised to upgrade to v1.8.5 which is backwards compatible. There are no known workarounds for this vulnerability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-25196 since 02/03/2025. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading to version 1.8.5 eliminates this vulnerability. Applying the patch 0aee4f47e0c642de78831ceb27bb62b116f49588 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• OpenFGA

Version

• 1.8.0
• 1.8.1
• 1.8.2
• 1.8.3
• 1.8.4

License

• open-source

Website

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

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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