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CVE-2026-48032— Hulumi: IAM-role policy checks bypassed when the role trusts multiple OIDC providers

Quick assessment

Affected

kerberosmansour hulumi

Exploitation

Public or AI PoC available; prioritize validation

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kerberosmansour Hulumi是Kerberosmansour个人开发者的一个面向Pulumi的云基础设施安全工具包。 Kerberosmansour Hulumi 1.4.0之前版本存在处理逻辑错误漏洞，该漏洞源于当角色信任多个OIDC提供商时IAM角色策略检查可被绕过。

CVSS 8.3 · High EPSS 0.54% · P45 Updated Jul 28, 2026

Possible ATT&CK Techniques 2 AI

T1098 · Account Manipulation T1484 · Domain or Tenant Policy Modification

Affected Version Matrix 1

Vendor	Product	Version Range	Status
kerberosmansour	hulumi	`< 1.4.0`	affected

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I. Basic Information for CVE-2026-48032

Vulnerability Information

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Vulnerability Title

Hulumi: IAM-role policy checks bypassed when the role trusts multiple OIDC providers

Source: CVE Program / CVE List V5

Vulnerability 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, IAM-role policy checks can be bypassed when the role trusts multiple OIDC providers. This issue has been patched in version 1.4.0.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

Source: CVE Program / CVE List V5

Vulnerability Type

不充分的比较

Source: CVE Program / CVE List V5

Vulnerability Title

Kerberosmansour Hulumi 处理逻辑错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
kerberosmansour	hulumi	< 1.4.0	-

II. Public POCs for CVE-2026-48032

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Verified env Premium

Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.

Success marker: VULNERABLE:PROOF_390be0134c2fb8cc PRIM-1 bypassed on multi-provider role (0 violations vs 1 for single-provider)

Reproduction recording is a Pro+ exclusive

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claude_code · 12476 chars

GitHub 复现环境（可 clone 直接跑）

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III. Intelligence Information for CVE-2026-48032

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Patches & Fixes for CVE-2026-48032 (1)

🔗 security: fix 4 HIGH + 15 MEDIUM Codex findings (8 root-cause clusters) — DCO-signed replacement for #177 by kerberosmansour · Pull Request #178 · kerberosmansour/hulumi · GitHub Read full article x_refsource_MISC

Vendor Advisories for CVE-2026-48032 (1)

🔗 IAM-role policy checks bypassed when the role trusts multiple OIDC providers · Advisory · kerberosmansour/hulumi · GitHub Read full article x_refsource_CONFIRM

https://www.cve.org/CVERecord?id=CVE-2026-48032

Same Patch Batch · kerberosmansour · 2026-07-24 · 6 CVEs total

CVE-2026-48034	8.5 HIGH	HULUMI-H5 bypass via decoy sibling resources targeting a different bucket
CVE-2026-48036	8.4 HIGH	Hulumi: Drift classifier fails open on adapter errors and over-promotes Mixed verdicts
CVE-2026-48033	8.4 HIGH	Hulumi: Policy packs bypassed by a forged Pulumi-URN logical name
CVE-2026-48035	7.1 HIGH	Hulumi: AccountFoundation audit-delivery S3 bucket could be silently weakened
CVE-2026-48037	6.3 MEDIUM	Hulumi: AccountFoundation reuse paths silently downgrade GuardDuty / Security Hub posture

IV. Related Vulnerabilities

Same product: hulumi

Same vendor: kerberosmansour

Same weakness: CWE-697