Description
argocd-mcp (Argo CD MCP Server) through 0.9.0 contains a path traversal vulnerability in the delete_application tool that allows MCP clients to reach unintended API endpoints via unvalidated applicationName values. Attackers or prompt-injected models can supply dot-segment values like ../repositories/ to send authenticated DELETE requests deleting repositories, clusters, or projects within the token's RBAC permissions.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| argoproj-labs | argocd-mcp | ≤ 0.9.0 | — |
References
- https://hackmd.io/@haind/argocd-mcp-delete-application-route-smuggling third-party-advisory
- https://github.com/argoproj-labs/mcp-for-argocd/blob/28d15ca69b0c31387cc6ec73d201fd13c5d22b6a/src/argocd/client.ts#L115-L139 technical-description
- https://github.com/argoproj-labs/mcp-for-argocd/blob/28d15ca69b0c31387cc6ec73d201fd13c5d22b6a/src/argocd/http.ts#L86-L91 technical-description
- https://github.com/argoproj-labs/mcp-for-argocd product
- VulnCheck Advisory: argocd-mcp through 0.9.0 Path Traversal via delete_application Tool third-party-advisory