High severity · published Jul 24, 2026
CVE-2026-48034
HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
8.5
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HU
hulumi · kerberosmansour
< 1.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48034
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48034
github.com
https://github.com/kerberosmansour/hulumi/pull/175
github.com
https://github.com/kerberosmansour/hulumi/pull/178
github.com
https://github.com/kerberosmansour/hulumi/releases/tag/v1.4.0
github.com
https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-9vc9-4jv3-rf86
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