Vulnerability Monitor

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CVE-2023-35933

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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 1 product from openfga organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2023-06-26T20:15:10.580

Last Modified

2024-11-21T08:09:00.350

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

Weaknesses

Type: Secondary
CWE-835

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openfga	openfga	< 1.1.1	Yes

References

https://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452 Patch ([email protected])
https://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8j Vendor Advisory ([email protected])
https://openfga.dev/api/service#/Relationship%20Queries/Check Exploit, Vendor Advisory ([email protected])
https://openfga.dev/api/service#/Relationship%20Queries/ListObjects Exploit, Vendor Advisory ([email protected])
https://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8j Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://openfga.dev/api/service#/Relationship%20Queries/Check Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://openfga.dev/api/service#/Relationship%20Queries/ListObjects Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For openfga's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.