argocd-mcp 0.8.0 Authentication Bypass via Unauthenticated HTTP
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
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82456
argocd-mcp
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/argoproj-labs/mcp-for-argocd",
"vendor": "argoproj-labs",
"product": "argocd-mcp",
"versions": [
{
"status": "affected",
"version": "0.8.0",
"lessThan": "0.9.0",
"versionType": "semver"
}
],
"collectionURL": "https://github.com/argoproj-labs/mcp-for-argocd",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-82456
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #1544 · Revision 1
- Added to Heist Feed
- Publisher date