GHSA-mgh9-4mwp-fg55
Suggest an improvement- Source
- https://github.com/advisories/GHSA-mgh9-4mwp-fg55
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-mgh9-4mwp-fg55/GHSA-mgh9-4mwp-fg55.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-mgh9-4mwp-fg55
- Aliases
- Published
- 2025-08-18T21:00:52Z
- Modified
- 2025-08-29T20:35:56Z
- Severity
-
- 5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CVSS Calculator
- Summary
- OpenFGA Authorization Bypass
- Details
-
Overview
OpenFGA v1.9.3 to v1.9.4 ( openfga-0.2.40 <= Helm chart <= openfga-0.2.41, v1.9.3 <= docker <= v.1.9.4) are vulnerable to improper policy enforcement when certain Check and ListObject calls are executed.
Am I Affected?
You are affected by this vulnerability if you are using OpenFGA v1.9.3 to v1.9.4, specifically under the following preconditions:
- Calling Check API or ListObjects with an authorization model that has a relationship directly assignable by more than 1 userset with same type, and
- There are check or list object queries that rely on the above relationship, and
- You have userset tuples that are assigned to the above relationship
Fix
Upgrade to v1.9.5. This upgrade is backwards compatible.
Workaround
Downgrade to v1.9.2 with enable-check-optimizations removed from OPENFGA_EXPERIMENTALS
Acknowledgments
OpenFGA would like Dominic Harries and rrozza-apolitical to thank for discovering this vulnerability.
- Database specific
{ "cwe_ids": [ "CWE-863" ], "github_reviewed": true, "github_reviewed_at": "2025-08-18T21:00:52Z", "nvd_published_at": "2025-08-18T20:15:29Z", "severity": "MODERATE" }- References
Affected packages
Go / github.com/openfga/openfga
Package
- Name
- github.com/openfga/openfga
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/openfga/openfga