8.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2024-31452

CVE-2024-31452: OpenFGA Authorization Bypass

OpenFGA is a high-performance and flexible authorization/permission engine. Some end users of OpenFGA v1.5.0 or later are vulnerable to authorization bypass when calling Check or ListObjects APIs. You are very likely affected if your model involves exclusion (e.g. a but not b) or intersection (e.g. a and b). This vulnerability is fixed in v1.5.3.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2024-31452

CVE-2024-31452:

8.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
github.com/openfga/openfga	go	>= 1.5.0, < 1.5.3	1.5.3

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from improper cycle handling in authorization evaluation logic. The commit diff shows significant changes to CheckFuncReducers (union, intersection, exclusion) in check.go, particularly around error handling and cycle detection propagation. These functions previously returned errors for cycles but didn't properly set CycleDetected metadata, leading to cached incorrect responses. The patch introduces CycleDetected tracking and modifies error handling to ensure cyclical relationships properly result in 'allowed: false' rather than error propagation or incorrect caching. The affected functions directly implement the authorization logic for exclusion, intersection, and union operations which the vulnerability description identifies as problematic scenarios.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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