CVE-2025-55213: Github.com/openfga/openfga OpenFGA Authorization Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-mgh9-4mwp-fg55
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CWE-863
Published
Advisory Summary

CVE-2025-55213 is a MODERATE openfga authorization bypass vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/openfga/openfga libraries in the Go ecosystem. The issue involves openfga authorization bypass. Remediation is available by upgrading affected packages to version 1.9.5.

CVE-2025-55213 at a Glance

CVE Identifier CVE-2025-55213
GHSA Identifier GHSA-mgh9-4mwp-fg55
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-863: Incorrect Authorization
Affected Product Github.com/openfga/openfga
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2025-55213

To remediate this vulnerability, upgrade all affected Github.com/openfga/openfga dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/openfga/openfga fixed: 1.9.5 
Upgrade github.com/openfga/openfga to 1.9.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/openfga/openfga

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-55213, inspect your project dependencies for Github.com/openfga/openfga:

inspect dependencies for github.com/openfga/openfga

Analyze the terminal output to locate any version of Github.com/openfga/openfga in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.9.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Github.com/openfga/openfga, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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](https://openfga.dev/docs/concepts#what-is-an-authorization-model) that has a relationship directly assignable by more than 1 [userset](https://openfga.dev/docs/modeling/building-blocks/usersets) with same [type](https://openfga.dev/docs/concepts#what-is-a-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.

CVE-2025-55213 Affected Github.com/openfga/openfga Versions

1 component(s)
Fixed Versions:
1.9.5
Product / Package Ecosystem Affected Versions Fixed Version
github.com/openfga/openfga
golang/github.com/openfga/openfga
Go
≥ 1.9.3
< 1.9.5
1.9.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openfga/openfga/security/advisories/GHSA-mgh9-4mwp-fg55
NVD — CVE-2025-55213 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55213
Security Fix Commit FIX COMMIT
https://github.com/openfga/openfga/commit/1a7e0e37fc4777c824b2386cac4867a66f3480b0
Github.com/openfga/openfga Source Repository REPOSITORY
https://github.com/openfga/openfga
pkg.go.dev/vuln/go-2025-3894 WEB
https://pkg.go.dev/vuln/GO-2025-3894

Frequently Asked Questions

What is CVE-2025-55213?
CVE-2025-55213 is a security vulnerability in Github.com/openfga/openfga involving OpenFGA Authorization Bypass under CWE-863: Incorrect Authorization.
Which Github.com/openfga/openfga versions are affected?
Affected versions include releases prior to 1.9.5 across affected packages: github.com/openfga/openfga.
What version fixes CVE-2025-55213?
Upgrading to 1.9.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/openfga/openfga affected?
Yes, github.com/openfga/openfga is affected in releases prior to 1.9.5. Upgrade your dependency to 1.9.5 or later.
What CWE is associated with CVE-2025-55213?
CVE-2025-55213 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Go dependencies for CVE-2025-55213?
Run the dependency tree command: 'inspect dependencies for github.com/openfga/openfga'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mgh9-4mwp-fg55",
  "modified" : "2025-08-29T20:35:56Z",
  "published" : "2025-08-18T21:00:52Z",
  "aliases" : [ "CVE-2025-55213" ],
  "summary" : "OpenFGA Authorization Bypass ",
  "details" : "### Overview\nOpenFGA 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.\n\n### Am I Affected?\nYou are affected by this vulnerability if you are using OpenFGA v1.9.3 to v1.9.4, specifically under the following preconditions:\n- Calling Check API or ListObjects with an [authorization model](https://openfga.dev/docs/concepts#what-is-an-authorization-model) that has a relationship directly assignable by more than 1 [userset](https://openfga.dev/docs/modeling/building-blocks/usersets) with same [type](https://openfga.dev/docs/concepts#what-is-a-type), and\n- There are check or list object queries that rely on the above relationship, and\n- You have userset tuples that are assigned to the above relationship\n\n\n### Fix\nUpgrade to v1.9.5. This upgrade is backwards compatible.\n\n### Workaround\nDowngrade to v1.9.2 with enable-check-optimizations removed from OPENFGA_EXPERIMENTALS\n\n### Acknowledgments\nOpenFGA would like Dominic Harries and rrozza-apolitical to thank for discovering this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openfga/openfga"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.9.3"
      }, {
        "fixed" : "1.9.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openfga/openfga/security/advisories/GHSA-mgh9-4mwp-fg55"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-55213"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openfga/openfga/commit/1a7e0e37fc4777c824b2386cac4867a66f3480b0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openfga/openfga"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2025-3894"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-18T21:00:52Z",
    "nvd_published_at" : "2025-08-18T20:15:29Z"
  }
}