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CVE-2026-6388

CRITICAL CVSS 3.1: 9.1
Updated Apr 17, 2026
ArgoCD
Parameter Value
CVSS 9.1 (CRITICAL)
Type CWE-1220
Vendor ArgoCD
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption

CVSS Vector v3.1

Weakness Type (CWE)