CVE-2026-24851mediumCWE-863

CVE-2026-24851: medium-severity vulnerability in openfga

OpenFGA Improper Policy Enforcement

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.8epss 0.3%
In short

OpenFGA versions 1.8.5 to 1.11.2 have a flaw where authorization checks may incorrectly allow or deny access due to improper handling of permission rules. This happens when specific combinations of public and non-public access settings are configured, potentially exposing sensitive resources to unauthorized users.

Technical detail

CWE-863 improper authorization vulnerability in OpenFGA affecting Check API calls when models combine type-bound public and non-public relations with overlapping tuple assignments. The vulnerability requires a specific permission model configuration with lexicographically ordered object IDs and mixed access type tuples; exploitation could bypass intended authorization controls. Fixed in v1.11.3.

Summary generated and translated by AI from the official description.
OpenFGA is a high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar. OpenFGA v1.8.5 to v1.11.2 ( openfga-0.2.22<= Helm chart <= openfga-0.2.51, v.1.8.5 <= docker <= v.1.11.2) are vulnerable to improper policy enforcement when certain Check calls are executed. The vulnerability requires a model that has a a relation directly assignable by a type bound public access and assignable by type bound non-public access, a tuple assigned for the relation that is a type bound public access, a tuple assigned for the same object with the same relation that is not type bound public access, and a tuple assigned for a different object that has an object ID lexicographically larger with the same user and relation which is not type bound public access. This vulnerability is fixed in v1.11.3.
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
Affected products
openfga · openfga
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