CVE-2026-6388 - Vulnerability Analysis

Overview

ArgoCD Image Updater contains a broken access control vulnerability caused by insufficient validation of ImageUpdater resource permissions in multi-tenant environments, letting attackers bypass namespace boundaries and trigger unauthorized image updates, exploit requires permissions to create or modify ImageUpdater resources.

Severity & Score

Impact

Attackers can escalate privileges across namespaces, causing unauthorized application updates and compromising application integrity.

Mitigation

Update to the latest version with proper validation of ImageUpdater resource permissions.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2458766
• https://access.redhat.com/security/cve/CVE-2026-6388

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Apr 16, 2026

🔴 CVE-2026-6388 - Critical (9.1) 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, th... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-6388/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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