High severityNVD Advisory· Published Jun 12, 2026· Updated Jun 16, 2026
CVE-2026-50287
CVE-2026-50287
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@agenticmail/mcpnpm | < 0.9.27 | 0.9.27 |
Affected products
1- Range: <0.9.27
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-63gr-g7jc-v8rgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-50287ghsaADVISORY
- github.com/agenticmail/agenticmail/blob/7b9b05d973676e9f3d097c08b8e649f59bfc15d0/CHANGELOG.mdghsaWEB
- github.com/agenticmail/agenticmail/blob/7b9b05d973676e9f3d097c08b8e649f59bfc15d0/packages/mcp/README.mdghsaWEB
- github.com/agenticmail/agenticmail/blob/7b9b05d973676e9f3d097c08b8e649f59bfc15d0/packages/mcp/src/index.tsghsaWEB
- github.com/agenticmail/agenticmail/commit/7b9b05d973676e9f3d097c08b8e649f59bfc15d0ghsaWEB
- github.com/agenticmail/agenticmail/commit/7d1791da7c8c8bd4e70d7081db48e18ab55f6736ghsaWEB
- github.com/agenticmail/agenticmail/security/advisories/GHSA-63gr-g7jc-v8rgnvdWEB
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