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Red Hat Openshift Gitops CVE-2026-6388

| EUVDEUVD-2026-23126 CRITICAL
Insufficient Granularity of Access Control (CWE-1220)
2026-04-15 redhat GHSA-mx9c-q7m4-fm97
9.1
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
9.1 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
Red Hat
9.1 HIGH
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Jul 26, 2026 - 15:04 vuln.today
EUVD ID Assigned
Apr 15, 2026 - 22:00 euvd
EUVD-2026-23126
CVE Published
Apr 15, 2026 - 21:34 nvd
CRITICAL 9.1

DescriptionCVE.org

A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker, with permissions to create or modify an ImageUpdater resource in a multi-tenant environment, to bypass namespace boundaries. By exploiting insufficient validation, the attacker can trigger unauthorized image updates on applications managed by other tenants. This leads to cross-namespace privilege escalation, impacting application integrity through unauthorized application updates.

AnalysisAI

Privilege escalation in ArgoCD Image Updater allows authenticated low-privileged users in a multi-tenant Red Hat OpenShift GitOps environment to update container images of applications in other namespaces. This cross‑namespace attack bypasses access controls, leading to unauthorized image changes and integrity compromise. No public exploit or active exploitation has been identified, and the EPSS score is very low.

Vendor StatusVendor

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CVE-2026-6388 vulnerability details – vuln.today

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