CVSS 3.1 Score 5.9 of 10 (medium)


Published Sep 27, 2023
Updated: Oct 2, 2023
CWE ID 835


CVE-2023-43645 is a vulnerability in OpenFGA, an authorization/permission engine inspired by Google Zanzibar. The vulnerability allows for a denial of service attack when certain Check calls are made against authorization models with circular relationship definitions. This can lead to resource exhaustion and server failure. Users should upgrade to version 1.3.2 and update any affected models to remediate the issue. There are no known workarounds, and models with cyclic relationships will return errors on versions 1.3.2 and above. The vulnerability affects multiple products, including ohMfk_, ohMfk9, phEj9V, r57_11, s23HTC, and others. The base severity of this vulnerability is rated as MEDIUM with a base score of 5.9 out of 10 by, indicating potential danger to organizations.

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