🛡️ CVE-2026-6388
🔴 CVSS 9.1 — Critical ✅ No Known Exploit CWE-1220 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
CWE CWE-1220
Public Exploit ✅ No
Source NVD
Published 2026-04-15
Updated 2026-06-02
Modified 2026-04-17
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

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