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CVE PROGRAM SOURCE RECORD2.3 Low

CVE-2026-42245

net-imap: Quadratic complexity when reading response literals

Description

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 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

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

References