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.
Published: 2026-06-12
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-63gr-g7jc-v8rg @agenticmail/mcp Missing Authentication for Critical Function
History

Mon, 15 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 12 Jun 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Agenticmail
Agenticmail agenticmail
Vendors & Products Agenticmail
Agenticmail agenticmail

Fri, 12 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title Missing Authentication for Critical Function in @agenticmail/mcp
Weaknesses CWE-306
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Agenticmail Agenticmail
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-15T18:18:24.876Z

Reserved: 2026-06-04T16:26:05.985Z

Link: CVE-2026-50287

cve-icon Vulnrichment

Updated: 2026-06-15T18:18:11.986Z

cve-icon NVD

Status : Deferred

Published: 2026-06-12T20:16:46.940

Modified: 2026-06-16T15:51:54.823

Link: CVE-2026-50287

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-12T20:30:06Z

Weaknesses