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agenticmail CVE debriefs

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HIGH agenticmail CVE published 2026-06-12

CVE-2026-50287

CVE-2026-50287 is a HIGH severity vulnerability in AgenticMail. 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.