CVE-2026-6388
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/04/2026
Last modified:
15/04/2026
Description
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.
Impact
Base Score 3.x
9.10
Severity 3.x
CRITICAL