Auth bypass in Agenticmail
CVE-2026-50287
AgenticMail gives AI agents real email addresses and phone numbers. Prior to version 0.9.27, @agenticmail/mcp exposes a Streamable HTTP transport when started with --http or MCP_HTTP=1. In that mode, the /mcp endpoint accepts requests without any HTTP authentication layer. A remote client can initialize a session and call tools directly. This issue has been patched in version 0.9.27.
Vulnerability class: Broken Authentication
EPSS: 0.004 (29.1th percentile) — read the EPSS interpretation.
Affected products
- Agenticmail — versions < 0.9.27
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)