Security Advisory

CVE-2026-42246

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-09 19:33:17

Last updated 2026-07-15 00:57:59

Assigner GitHub_M

CVSS score 7.6

State PUBLISHED

Description

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return "successfully", without starting TLS. This issue has been patched in versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4.

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