Description

OPenFGA is an open source authorization/permission engine built for developers. OpenFGA versions v1.1.0 and prior are vulnerable to a DoS attack when Check and ListObjects calls are executed against authorization models that contain circular relationship definitions. Users are affected by this vulnerability if they are using OpenFGA v1.1.0 or earlier, and if you are executing `Check` or `ListObjects` calls against a vulnerable authorization model. Users are advised to upgrade to version 1.1.1. There are no known workarounds for this vulnerability. Users that do not have circular relationships in their models are not affected.

Classification

CVE ID: CVE-2023-35933

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.9

Affected Products

Vendor: openfga

Product: openfga

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.16% (probability of being exploited)

EPSS Percentile: 53.04% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8j
https://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452
https://openfga.dev/api/service#/Relationship%20Queries/Check
https://openfga.dev/api/service#/Relationship%20Queries/ListObjects

Timeline