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critical·Misconfiguration·Updated Sep 18, 2026

argocd-mcp 0.8.0 - Unauthenticated MCP Session and Tool Access

Est. Time~10 seconds
Scan TypeGroup Scan
Targetsdomain, subdomain, ipv4
CostFree
3
Times Used
continuous scan runs
0
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
10.0
CVSScritical
Exploitable remotely over the internet · no authentication required.
Description

argocd-mcp 0.8.0 binds its HTTP transport to every network interface and accepts MCP sessions without requiring caller credentials when ARGOCD_API_TOKEN is configured. Attackers who can reach the listener can invoke the full tool surface using the operator's stored token to create applications, request syncs, and modify Argo CD resources.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
argocd-mcpby argoproj-labs
AFFECTED< 0.9.0SAFE ✓≥ 0.9.0
Updated Sep 18, 2026View on NVD →

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argocd-mcp 0.8.0 - Unauthenticated MCP Session and Tool Access CVE-2026-82456 Scanner | S4E