GHSA-jwvj-g8pc-cx45Published

OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision

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cve-program · CVE-2026-34972

Published

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. From 1.8.0 to 1.13.1, under specific conditions, BatchCheck calls with multiple checks sent for the same object, relation, and user combination can result in improper policy enforcement. This vulnerability is fixed in 1.14.0.

Source published: 6 Apr 2026 20:41:33 UTC
Source modified: 7 Apr 2026 14:01:23 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 5.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

euvd · EUVD-2026-19486

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 6, 2026, 8:41:33 PM

dateUpdated: Apr 7, 2026, 2:01:23 PM

Source published: Apr 6, 2026, 8:41:33 PM (timezone not stated)
Source modified: Apr 7, 2026, 2:01:23 PM (timezone not stated)
Saved here: 15 Nov 2026 10:08:59 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 3.1 · 5.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

nvd · CVE-2026-34972

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-863

Original publisher date fields

published: 2026-04-06T21:16:19.997

lastModified: 2026-07-24T21:10:00.143

2 source CPE criteria · context only

cpe:2.3:a:openfga:helm_charts:*:*:*:*:*:openfga:*:*
cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 6 Apr 2026 21:16:19 UTC
Source modified: 24 Jul 2026 21:10:00 UTC
Saved here: 25 Oct 2026 08:17:35 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · [email protected] · Secondary · 5.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS 3.1 · [email protected] · Primary · 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

osv · GHSA-jwvj-g8pc-cx45

Published

### 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.

Source published: 7 Apr 2026 18:05:16 UTC
Source modified: 10 Sep 2026 03:50:44 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Publisher rating · MODERATE

osv · GO-2026-5483

Published

OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision in github.com/openfga/openfga

Source published: 25 Jun 2026 22:34:31 UTC
Source modified: 7 Jul 2026 22:59:27 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.