CVE-2026-48034 HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
Attackers can bypass security controls in Hulumi by using decoy resources to target different buckets, compromising infrastructure security.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48034?
CVE-2026-48034 is a high-severity vulnerability in kerberosmansour hulumi, published on 24 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2026-48034?
2 open source packages ship an affected version, including @hulumi/policies.
| Package | Affected | Fixed in |
|---|---|---|
@hulumi/policies npm | All versions | 1.4.0 |
@hulumi/policies npm | All versions | 1.4.0 |
How do I fix CVE-2026-48034?
Upgrade @hulumi/policies to 1.4.0 or later.
Is CVE-2026-48034 being exploited?
There is no known exploitation of CVE-2026-48034 in the wild and no public exploit code.
Sources
Also known as GHSA-9vc9-4jv3-rf86.