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OpenAdvisories
Medium · 5.0 CVE-2026-34972 EUVD-2026-19486GHSA-jwvj-g8pc-cx45GO-2026-5483

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

Published Apr 6, 2026 · Updated Apr 7, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
openfga openfga >= 1.8.0, < 1.14.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling grafana-12.3 12.3.6-r2 —
Wolfi rolling grafana-12.4 12.4.2-r3 —
Wolfi rolling openfga +2 1.14.2-r0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/openfga/openfga >= 1.8.0, < 1.14.0 1.14.0 GHSA-jwvj-g8pc-cx45

Advisories 1

References