CVE-2026-6388

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 v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 5.3

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-6388
https://bugzilla.redhat.com/show_bug.cgi?id=2458766
https://access.redhat.com/security/cve/CVE-2026-6388
https://bugzilla.redhat.com/show_bug.cgi?id=2458766
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6388.json

Configurations

No configuration.

History

30 Jun 2026, 03:21

Type	Values Removed	Values Added
References		() https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6388.json -
References	~~() https://access.redhat.com/security/cve/CVE-2026-6388 -~~	() https://access.redhat.com/security/cve/CVE-2026-6388 -
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2458766 -~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2458766 -

15 Apr 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-15 22:17

Updated : 2026-07-15 01:16

NVD link : CVE-2026-6388

Mitre link : CVE-2026-6388

CVE.ORG link : CVE-2026-6388

JSON object : View

Products Affected

No product.

CWE

CWE-1220

Insufficient Granularity of Access Control

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