HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
Priority LOW 37CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00449 39th percentileScored 2026-11-07
Fix Fixed hulumi (kerberosmansour): 1.4.0@hulumi/policies (npm): 1.4.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| kerberosmansour | hulumi | before 1.4.0 | 1.4.0 | Patch available | CNA |
| — | @hulumi/policies (npm) | before 1.4.0 | 1.4.0 | Patch available | GHSA-9vc9-4jv3-rf86 |
- hulumi Vendorkerberosmansour Affected before 1.4.0 Fixed in 1.4.0 Patch available CNA
- @hulumi/policies (npm) Vendor— Affected before 1.4.0 Fixed in 1.4.0 Patch available GHSA-9vc9-4jv3-rf86
Remediation
- Fix · CNA hulumi (kerberosmansour) Fixed in 1.4.0
- Fix · GHSA-9vc9-4jv3-rf86 @hulumi/policies (npm) Fixed in 1.4.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-48034
- 2026-10-03 Alias added: GHSA-9vc9-4jv3-rf86
References
More kerberosmansour vulnerabilities
- TI-2026-57163 hulumi before v1.3.2 SCP Template Tag-on-Create Bypass CVSS 4.0CRITICAL 9.3
- TI-2026-57161 hulumi before v1.3.2 Privilege Escalation via IAM Policy CVSS 4.0CRITICAL 9.3
- TI-2026-35479 Hulumi: Drift classifier fails open on adapter errors and over-promotes Mixed verdicts CVSS 4.0HIGH 8.4
- TI-2026-35475 Hulumi: IAM-role policy checks bypassed when the role trusts multiple OIDC providers CVSS 4.0HIGH 8.3
- TI-2026-57166 Hulumi before v1.3.2 Helper Script Shadowing via Workspace Files CVSS 4.0HIGH 8.6
- TI-2026-35476 Hulumi: Policy packs bypassed by a forged Pulumi-URN logical name CVSS 4.0HIGH 8.4
Sources
- CVE-2026-48034 · CVE Program
- CVE-2026-48034 · NVD
- FIRST EPSS
- GHSA-9vc9-4jv3-rf86 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences