CVE-2026-48033Network attack vector

Hardening bypass via unanchored URN substring matching

Published Jul 24, 2026 · Updated Jul 24, 2026

Policy bypass in Hulumi @hulumi/policies before 1.4.0 allows remote authenticated users to evade mandatory hardening checks. Affected rules search the entire Pulumi URN for a trusted component-type substring instead of restricting the match to the type-chain segment, so a developer-controlled logical name is mistaken for trusted ancestry. A developer or compromised pull request with resource-definition access can make raw cloud resources pass while expected hardening defaults remain absent.

CVSS severity8.4
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Policy bypass in Hulumi @hulumi/policies before 1.4.0 allows remote authenticated users to evade mandatory hardening checks. Affected rules search the entire Pulumi URN for a trusted component-type substring instead of restricting the match to the type-chain segment, so a developer-controlled logical name is mistaken for trusted ancestry. A developer or compromised pull request with resource-definition access can make raw cloud resources pass while expected hardening defaults remain absent.

The record

CVE
CVE-2026-48033
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
Sherif Mansour
Product
Hulumi
Classifications
CWE-693, T1562.001
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Sherif Mansour · Hulumiversion=< 1.4.0

Published CVSS scores

8.4GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1562.001Disable or Modify Tools

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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