CVE-2026-33729 MEDIUM

CVE-2026-33729: OpenFGA has an Authorization Bypass through cached keys

Vendor Openfga
Product openfga
Weakness CWE-20 · Input validation
Published March 27, 2026
Last update March 30, 2026

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 27, 2026 CVE published
March 30, 2026 Record updated