CVE-2026-6388
CRITICAL EPSS 23.0%
Published Apr 15, 20262mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Published Apr 15, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Low
Integrity High
Availability Low
Threat Intelligence
EPSS Exploit Probability
23.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-1220
References 2
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-6388
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2458766
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.