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CVE-2026-48034

HULUMI-H5 bypass via decoy sibling resources targeting a different bucket

HIGH
8.5
CVSS Score
Published: July 24, 2026 at 06:38 PM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorHulumi

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Severity
HIGH8.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Hulumi· Kerberosmansour
90%
v < 1.4.0
Affected range stops below 1.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_CONFIRM
Source: cverecord
https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-9vc9-4jv3-rf86
x_refsource_MISC
Source: cverecord
https://github.com/kerberosmansour/hulumi/pull/175
x_refsource_MISC
Source: cverecord
https://github.com/kerberosmansour/hulumi/pull/178
x_refsource_MISC
Source: cverecord
https://github.com/kerberosmansour/hulumi/releases/tag/v1.4.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.5HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-284

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