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.
CVE-2023-35933
This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 1.1% (65th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.9
- EG Score
- 5.9MEDIUMmedium confidence
- EG Risk
- 43EG Risk 43/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity59% × 45%Exploitation40% × 40%Automatability0% × 15%CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 1.1%
- EPSS %ILE
- 65th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
June 26, 2023
Last Modified
November 21, 2024
References (8)
- security-advisories@githubhttps://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452
- security-advisories@githubhttps://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8j
- security-advisories@githubhttps://openfga.dev/api/service#/Relationship%20Queries/Check
- security-advisories@githubhttps://openfga.dev/api/service#/Relationship%20Queries/ListObjects
- af854a3a-2127-422b-91ae-364da2661108https://github.com/openfga/openfga/commit/087ce392595f3c319ab3028b5089118ea4063452
- af854a3a-2127-422b-91ae-364da2661108https://github.com/openfga/openfga/security/advisories/GHSA-hr9r-8phq-5x8j
- af854a3a-2127-422b-91ae-364da2661108https://openfga.dev/api/service#/Relationship%20Queries/Check
- af854a3a-2127-422b-91ae-364da2661108https://openfga.dev/api/service#/Relationship%20Queries/ListObjects
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| github.com/openfga/openfga | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 25× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 186 total refreshes for this CVE.
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Related CVEs(same product + same CWE)
Same product
10 shownGo:github.com/openfga/openfga
Frequently asked(5)
What is CVE-2023-35933?
When was CVE-2023-35933 disclosed?
Is CVE-2023-35933 actively exploited?
What is the CVSS score of CVE-2023-35933?
How do I remediate CVE-2023-35933?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-35933
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