CVE-2026-48034CWE-284

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

High · published July 24, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
38.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.5 · HIGH
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
EPSS
0.00449 · 38.0th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-07-24T18:38Z
EPSS history
Timeline
  • 24 JUL 18:38Z
    HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
    cvelistv5