CRITICALVulnerability
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NVD CRITICAL: CVE-2026-6388 — A flaw was found in ArgoCD Image Updater. This vulnerability allows an attacker,...

·Source: NIST NVD

Updated:

Executive Summary

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

Analysis

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. CVSS Score: 9.1. Published: 2026-04-15T22:17:22.583.

Indicators of Compromise (1)

CVE (1)
CVE-2026-6388
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Apr 15, 2026. Verified by: NIST.

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