NVD Vulnerability Detail
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CVE-2026-42246
Summary

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.

Publication Date May 10, 2026, 5:16 a.m.
Registration Date May 11, 2026, 4:08 a.m.
Last Update May 10, 2026, 5:16 a.m.
Related information, measures and tools
Common Vulnerabilities List