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CVE PROGRAM SOURCE RECORD7.6 High

CVE-2026-42246

net-imap vulnerable to STARTTLS stripping via invalid response timing

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Status
Published
Published
Updated
Assigning organization
GitHub_M

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

ruby net-imap

  • < 0.3.10affected
  • >= 0.4.0, < 0.4.24affected
  • >= 0.5.0, < 0.5.14affected
  • >= 0.6.0, < 0.6.4affected

References