CVE-2026-6388Argocd-image-updater: argocd image updater: cross-namespace privilege escalation via insufficient namespace validation

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://access.redhat.com/security/cve/CVE-2026-6388 vdb-entry
• RHBZ#2458766 issue-tracking
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6388.json