Vulnerability · Published Apr 6, 2026 · Assigned by GitHub_M

CVE-2026-34972OpenFGA's BatchCheck within-request deduplication produces incorrect authorization decisions via list-value cache-key collision

Medium 5.0

In plain English

A medium-severity incorrect authorization in openfga from openfga. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.0Medium

Exploit odds (30 days)0.2%top 87.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/openfga/openfga	1.14.0	GHSA-jwvj-g8pc-cx45
Go	github.com/openfga/openfga	1.14.0	GO-2026-5483

Affected products (as reported)

Vendor	Product	Versions
openfga	openfga	>= 1.8.0, < 1.14.0

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

References

https://github.com/openfga/openfga/security/advisories/GHSA-jwvj-g8pc-cx45 x_refsource_CONFIRM