CVE-2026-42297
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, the Sync Service's ConfigMap-backed provider (server/sync/sync_cm.go) performs zero authorization checks on all CRUD operations (create, read, update, delete). Any authenticated user — including those using fake Bearer tokens — can create, read, update, and delete Kubernetes ConfigMaps containing synchronization limits. This issue has been patched in version 4.0.5.
Published:May 9, 2026
Last Modified:May 15, 2026
EPS:May 9, 2026
EPSS Score:0.00041
CVSS Score:8.3
Affected Products
Vendor
Product
Action
Vendor
Argoproj
Product
Argo-workflows
Argoproj
Argo-workflows
Vendor
Argoproj
Product
Argo Workflows
Argoproj
Argo Workflows
Exploits
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
