CVE-2026-48037 Hulumi: AccountFoundation reuse paths silently downgrade GuardDuty / Security Hub posture
Attackers can bypass security monitoring by exploiting AccountFoundation reuse paths that silently downgrade GuardDuty and Security Hub posture in Hulumi.
- 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-2026-48037?
CVE-2026-48037 is a medium-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, AccountFoundation reuse paths silently downgrade GuardDuty / Security Hub posture. This issue has been patched in version 1.4.0.
Weakness: CWE-693
Which versions are affected by CVE-2026-48037?
2 open source packages ship an affected version, including @hulumi/baseline.
| Package | Affected | Fixed in |
|---|---|---|
@hulumi/baseline npm | All versions | 1.4.0 |
@hulumi/baseline npm | All versions | 1.4.0 |
How do I fix CVE-2026-48037?
Upgrade @hulumi/baseline to 1.4.0 or later.
Is CVE-2026-48037 being exploited?
There is no known exploitation of CVE-2026-48037 in the wild and no public exploit code.
Sources
Also known as GHSA-cj8g-prcm-mfg5.