OpenFGA Authorization BypassGHSA-m3q4-7qmj-657m
Fix: openfga/openfga#422GHSA-m3q4-7qmj-657m is a CWE-285 vulnerability in github.com/openfga/openfga. A fix is available for github.com/openfga/openfga — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-m3q4-7qmj-657m.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
Real-World Exposure
github.com/openfga/openfgaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Overview
During our internal security assessment, it was discovered that OpenFGA versions v0.3.0 is vulnerable to authorization bypass under certain conditions.
Am I Affected?
You are affected by this vulnerability if all of the following applies:
- You are using OpenFGA v0.3.0
- You created a model using modeling language v1.1 that applies a type restriction to an object e.g.
define viewer: [user] - You created tuples based on the aforementioned model, e.g.
document:1#viewer@user:jon - You updated the previous model by adding a new type and replacing the previous restriction with the newly added type e.g.
define viewer: [employee] - You use the tuples created against the first model (step 3) and issue checks against the updated model e.g.
user=user:jon, relation=viewer, object:document:1
How to fix that?
Upgrade to version v0.3.1
Backward Compatibility
This update is backward compatible.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/openfga/openfga | ≥ 0.3.0&&< 0.3.1 | 0.3.1go get github.com/openfga/openfga@v0.3.1 |
Affected Products
openfgaopenfgaDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/openfga/openfga, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/openfga/openfga to 0.3.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m3q4-7qmj-657m is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is GHSA-m3q4-7qmj-657m in your dependencies?
Find it across Go, including transitive dependencies.