CVE-2026-48032Network attack vector

Policy bypass via lossy federated-principal flattening

Published Jul 24, 2026 · Updated Jul 24, 2026

Incorrect comparison in @hulumi/policies before 1.4.0 allows attackers to bypass IAM-role checks via multi-provider OIDC trusts. The federatedIsGithubOidc matcher coerces Principal.Federated arrays into a comma-joined string and checks only its start, so a later GitHub provider is missed. A role must trust multiple OIDC providers; wildcard subject conditions can then pass G_OIDC_1 and G_OIDC_2 validation and expose role assumption or administrator-level permissions.

CVSS severity8.3
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect comparison in @hulumi/policies before 1.4.0 allows attackers to bypass IAM-role checks via multi-provider OIDC trusts. The federatedIsGithubOidc matcher coerces Principal.Federated arrays into a comma-joined string and checks only its start, so a later GitHub provider is missed. A role must trust multiple OIDC providers; wildcard subject conditions can then pass G_OIDC_1 and G_OIDC_2 validation and expose role assumption or administrator-level permissions.

The record

CVE
CVE-2026-48032
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
Sherif Mansour
Product
Hulumi
Classifications
CWE-697, T1078.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sherif Mansour · Hulumiversion=< 1.4.0

Published CVSS scores

8.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-697Incorrect Comparison
T1078.004Valid Accounts: Cloud Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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