CVE-2026-50287

Published Jun 12, 2026

Last updated 21 hours ago

CVSS high 8.7

Overview

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.
Source
security-advisories@github.com
NVD status
Received

Risk scores

CVSS 4.0

Type
Secondary
Base score
8.7
Impact score
-
Exploitability score
-
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity
HIGH

Weaknesses

security-advisories@github.com
CWE-306

Social media

Hype score
Not currently trending

  1. CVE-2026-50287 Unauthenticated Remote Tool Access in AgenticMail MCP HTTP Transport Below 0.9.27 https://t.co/pCaqe0Jyte

    @VulmonFeeds

    13 Jun 2026

    41 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

References

Sources include official advisories and independent security research.