# CVE-2026-6388

> Vulnerability · severity: **CRITICAL** (CVSS 9.1).

## Description

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.

## Key facts

- **CVE ID:** CVE-2026-6388
- **Published:** 2026-04-15
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.1
- **CWE codes:** CWE-1220

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6388

## Citation

> AI Analytics. CVE-2026-6388. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-6388. Derived from NIST NVD. Licensed CC0.

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