CVE-2026-34972: Github.com/openfga/openfga OpenFGA's BatchCheck Within-request Deduplication Produces Vulnerability

MODERATE
Advisory Identifier: GHSA-jwvj-g8pc-cx45
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CVSS 5.0
CWE-863
Published
Advisory Summary

CVE-2026-34972 is a MODERATE (CVSS 5.0) openfga's batchcheck within-request deduplication produces vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/openfga/openfga libraries in the Go ecosystem. The issue involves openfga's batchcheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision. Remediation is available by upgrading affected packages to version 1.14.0.

CVE-2026-34972 at a Glance

CVE Identifier CVE-2026-34972
GHSA Identifier GHSA-jwvj-g8pc-cx45
Severity MODERATE
CVSS v3.1 Base Score 5.0
CWE Classification CWE-863: Incorrect Authorization
Affected Product Github.com/openfga/openfga
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-34972

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: 1.14.0 
Upgrade github.com/openfga/openfga to 1.14.0
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-2026-34972, 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 1.14.0), 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

### Description In OpenFGA, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement. ### Am I affected? You are affected if you meet the following preconditions: 1. You execute **BatchCheck** operations which rely on context. 2. Multiple checks are sent within a single BatchCheck operation for the same user/object/relation combination, each containing context. 3. The contexts between those checks differ in a specific way ### Fix Upgrade to OpenFGA v1.14.0 ### Acknowledgement OpenFGA would like to thank @bugbunny-research for the discovery and detailed report.

CVE-2026-34972 Affected Github.com/openfga/openfga Versions

1 component(s)
Fixed Versions:
1.14.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/openfga/openfga
golang/github.com/openfga/openfga
Go
≥ 1.8.0
< 1.14.0
1.14.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/openfga/openfga/security/advisories/GHSA-jwvj-g8pc-cx45
NVD — CVE-2026-34972 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34972
Github.com/openfga/openfga Source Repository REPOSITORY
https://github.com/openfga/openfga

Frequently Asked Questions

What is CVE-2026-34972?
CVE-2026-34972 is a security vulnerability in Github.com/openfga/openfga involving OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision under CWE-863: Incorrect Authorization.
Which Github.com/openfga/openfga versions are affected?
Affected versions include releases prior to 1.14.0 across affected packages: github.com/openfga/openfga.
What version fixes CVE-2026-34972?
Upgrading to 1.14.0 (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 1.14.0. Upgrade your dependency to 1.14.0 or later.
What is the CVSS score of CVE-2026-34972?
CVE-2026-34972 has a CVSS v3.1 base score of 5.0 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-34972?
CVE-2026-34972 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-2026-34972?
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-jwvj-g8pc-cx45",
  "modified" : "2026-04-07T18:05:16Z",
  "published" : "2026-04-07T18:05:16Z",
  "aliases" : [ "CVE-2026-34972" ],
  "summary" : "OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision",
  "details" : "### Description\n\nIn OpenFGA, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement.\n\n### Am I affected?\n\nYou are affected if you meet the following preconditions:\n1. You execute **BatchCheck** operations which rely on context. \n2. Multiple checks are sent within a single BatchCheck operation for the same user/object/relation combination, each containing context.\n3. The contexts between those checks differ in a specific way\n\n### Fix\nUpgrade to OpenFGA v1.14.0\n\n### Acknowledgement\nOpenFGA would like to thank @bugbunny-research for the discovery and detailed report.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openfga/openfga"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.8.0"
      }, {
        "fixed" : "1.14.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.13.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openfga/openfga/security/advisories/GHSA-jwvj-g8pc-cx45"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34972"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openfga/openfga"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-07T18:05:16Z",
    "nvd_published_at" : "2026-04-06T21:16:19Z"
  }
}