CRITICALVulnerability
Verified
Global

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.

Related Threats

MEDIUMVulnerability

Friday Squid Blogging: New Giant Squid Video

Pretty fantastic video from Japan of a giant squid eating another squid. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy.

Schneier on Security
MEDIUMVulnerability

How NIST's Cutback of CVE Handling Impacts Cyber Teams

Industry and ad hoc coalitions appear poised to help fill the gap created by NIST's decision to cut back on CVE data enrichment.

Dark Reading
CRITICALVulnerability

NVD CRITICAL: CVE-2026-40525 — OpenViking prior to commit c7bb167 contains an authentication bypass vulnerabili...

OpenViking prior to commit c7bb167 contains an authentication bypass vulnerability in the VikingBot OpenAPI HTTP route surface where the authentication check fails open when the api_key configuration value is unset or empty. Remote attackers with network access to the exposed service can invoke privileged bot-control functionality without providing a valid X-API-Key header, including submitting at

CVE-2026-40525
NIST NVD