@hulumi/policies Parent Spoof Bypass Vulnerability

Executive Summary

CVE-2026-82861 is a high-severity vulnerability in @hulumi/policies versions before 1.3.2. It allows attackers to bypass security checks by submitting falsified evidence during policy evaluation. Specifically, it enables a parent spoof bypass in the SecureBucket policy, causing the validator to miss unsafe bucket configurations.

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Detection Guidance

To detect this vulnerability, check the version of the @hulumi/policies package in your environment. Run 'npm list @hulumi/policies' to see the installed version. If the version is below 1.3.2, the system is vulnerable.

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Impact Analysis

This vulnerability could allow unauthorized actors to bypass security policies, leading to unsafe bucket configurations being overlooked. Attackers might exploit this to access or manipulate data inappropriately, potentially causing data breaches or unauthorized changes to system resources.

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Mitigation Strategies

Immediately upgrade the @hulumi/policies package to version 1.3.2 or later using 'npm update @hulumi/policies'. Verify the update with 'npm list @hulumi/policies' to ensure the correct version is installed.

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