GHSA-JWVJ-G8PC-CX45
Vulnerability from github – Published: 2026-04-07 18:05 – Updated: 2026-04-07 18:05
VLAI?
Summary
OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision
Details
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.
Severity ?
5.0 (Medium)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.13.1"
},
"package": {
"ecosystem": "Go",
"name": "github.com/openfga/openfga"
},
"ranges": [
{
"events": [
{
"introduced": "1.8.0"
},
{
"fixed": "1.14.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-34972"
],
"database_specific": {
"cwe_ids": [
"CWE-863"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-07T18:05:16Z",
"nvd_published_at": "2026-04-06T21:16:19Z",
"severity": "MODERATE"
},
"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.",
"id": "GHSA-jwvj-g8pc-cx45",
"modified": "2026-04-07T18:05:16Z",
"published": "2026-04-07T18:05:16Z",
"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"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "OpenFGA\u0027s BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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