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.
Score
A numerical rating that indicates how dangerous this vulnerability is.
9.1Critical- Published Date:Apr 15, 2026
- CISA KEV Date:*No Data*
- Industries Affected:20
Exploitability
- Score:3.1
- Attack Vector:NETWORK
- Attack Complexity:LOW
- Privileges Required:LOW
- User Interaction:NONE
- Scope:CHANGED
Impact
- Score:5.3
- Confidentiality Impact:LOW
- Integrity Impact:HIGH
- Availability Impact:LOW
Description Preview
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.
Industries Affected
Below is a list of industries most commonly impacted or potentially at risk based on intelligence.
