Missing Authentication for Critical Function Affecting @agenticmail/mcp package, versions <0.9.27
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published1 Jul 2026
- disclosed1 Jun 2026
- creditUnknown
Introduced: 1 Jun 2026
CVE-2026-50287 (opens in a new tab)How to fix?
Upgrade @agenticmail/mcp to version 0.9.27 or higher.
Overview
@agenticmail/mcp is a MCP server for AgenticMail — give any AI client real email, SMS, and phone call-control capabilities
Affected versions of this package are vulnerable to Missing Authentication for Critical Function in the process that handles HTTP requests to the /mcp endpoint when started with the --http flag or MCP_HTTP=1 environment variable. An attacker can perform unauthorized administrative and gateway operations by sending unauthenticated HTTP requests to the exposed endpoint, which are then executed with server-side privileges using the configured master key.