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CVE-2026-82456

argocd-mcp 0.8.0 Authentication Bypass via Unauthenticated HTTP

CVSS 4.0 10.0 CRITICALCVSS 3.1 10.0 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-82456

Published

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.

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Affected versions, risk and source history

Exploitation and risk

Source status

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Advisory history

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23 Oct 2026 15:48:27 UTC

argocd-mcp 0.8.0 Authentication Bypass via Unauthenticated HTTP

cve-program · CVE-2026-82456 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 12 Nov 13:19 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current

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