CVE-2026-82456: Binding to an Unrestricted IP Address in argoproj-labs argocd-mcp
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.
CVE-2026-82456: Binding to an Unrestricted IP Address in argoproj-labs argocd-mcp
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.
CVSS v4.0
Score 10.0critical
Affected software
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Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-29T13:22:59.955Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a92e429acd9273b49d35869
Added to database: 08/29/2026, 13:52:41 UTC
Last updated: 08/29/2026, 13:52:41 UTC
Views: 1
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