OpenFGA has an Authorization Bypass through cached keys

NGHIÊM TRỌNG 9.8CVE-2026-33729 · GHSA-h6c8-cww8-35hf · GO-2026-4857 · Công bố 27/03/2026 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2026-33729 là lỗ hổng mức NGHIÊM TRỌNG (CVSS 9.8) ảnh hưởng github.com/openfga/openfga, openfga (openfga).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.25%, cao hơn 16.4% các lỗ hổng khác.
Cách xử lý: cập nhật lên 1.13.1 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
github.com/openfga/openfga Go	`< 1.13.1`	`1.13.1`
openfga openfga	`< 1.13.1`	`1.13.1`

Mô tả

Description

In OpenFGA, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache key. This can result in OpenFGA reusing an earlier cached result for a different request.

Am I Affected?

Users are affected if the following preconditions are met:

The model has relations which rely on condition evaluation.
Caching is enabled.

Fix

Upgrade to OpenFGA v1.13.1.

Acknowledgement

OpenFGA would like to thank @Amemoyoi for the discovery and responsible disclosure.

Mô tả của NVD

OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. In versions prior to 1.13.1, under specific conditions, models using conditions with caching enabled can result in two different check requests producing the same cache key. This can result in OpenFGA reusing an earlier cached result for a different request. Users are affected if the model has relations which rely on condition evaluation andncaching is enabled. OpenFGA v1.13.1 contains a patch.