Improper Authorization in Google Cloud Integration Connectors Leads to Project Takeover

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-4644
StatePUBLISHED
AssignerGoogleCloud
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-04 11:17:18 UTC
Updated2026-09-08 14:16:31 UTC
DescriptionA Missing Authorization vulnerability in HTTP Connector in Google Cloud Integration Connectors versions prior to 2025-12-11 on Google Cloud Platform allows an authenticated user to escalate privileges and take over a Google Cloud Project using unauthorized service account attachment. This vulnerability was patched on 11 December 2025, and no customer action is needed.

Risk And Classification

Primary CVSS: v4.0 8.5 HIGH from f45cbf4e-4146-4068-b7e1-655ffc2c548c

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear

EPSS: 0.002260000 probability, percentile 0.132390000 (date 2026-09-07)

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
4.0f45cbf4e-4146-4068-b7e1-655ffc2c548cSecondary8.5HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/C...
4.0CNACVSS8.5HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/U:Clear

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
High
Sub Integrity
High
Sub Availability
High

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Google Cloud Integration Connectors affected 2025-12-11 date Not specified

References

ReferenceSourceLinkTags
docs.cloud.google.com/support/bulletins f45cbf4e-4146-4068-b7e1-655ffc2c548c docs.cloud.google.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: asterfiester (en)

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