Hulumi is an open-source toolkit that ships secure-by-default cloud and platform infrastructure components for Pulumi. Prior to version 1.4.0, there is a bypass via decoy sibling resources targeting a different bucket. This issue has been patched in version 1.4.0.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
kerberosmansour hulumi affected
Version Status Constraints
< 1.4.0 affected —

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Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9vc9-4jv3-rf86 @hulumi/policies has a HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/kerberosmansour/hulumi/pull/175 cve-icon
https://github.com/kerberosmansour/hulumi/pull/178 cve-icon
https://github.com/kerberosmansour/hulumi/releases/tag/v1.4.0 cve-icon
https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-9vc9-4jv3-rf86 cve-icon
History

Fri, 24 Jul 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 24 Jul 2026 19:15:00 +0000

Type Values Removed Values Added
Description Hulumi is an open-source toolkit that ships secure-by-default cloud and platform infrastructure components for Pulumi. Prior to version 1.4.0, there is a bypass via decoy sibling resources targeting a different bucket. This issue has been patched in version 1.4.0.
Title HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
Weaknesses CWE-284
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-24T20:15:32.345Z

Reserved: 2026-05-20T18:15:53.577Z

Link: CVE-2026-48034

cve-icon Vulnrichment

Updated: 2026-07-24T20:15:14.209Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses