CVE-2023-35933

Name: CVE-2023-35933
Creator: NVD / NIST
Published: 2023-06-26T20:15:10.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2023-35933 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

Affected Software

Vendor	Product	Versions
Openfga	Openfga	< 1.1.1

References

https://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452Patch
https://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8jVendor Advisory
https://openfga.dev/api/service#/Relationship%20Queries/CheckExploit, Vendor Advisory
https://openfga.dev/api/service#/Relationship%20Queries/ListObjectsExploit, Vendor Advisory
https://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452Patch
https://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8jVendor Advisory
https://openfga.dev/api/service#/Relationship%20Queries/CheckExploit, Vendor Advisory
https://openfga.dev/api/service#/Relationship%20Queries/ListObjectsExploit, Vendor Advisory

Timeline

Published: Jun 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-35933?

How severe is CVE-2023-35933?

CVE-2023-35933 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2023-35933?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-35933?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST