CVE-2026-42258

Summary

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, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

Affected Software

VendorProductVersion RangeStatus
rubynet-imap< 0.4.24affected
rubynet-imap>= 0.5.0, < 0.5.14affected
rubynet-imap>= 0.6.0, < 0.6.4affected

Weaknesses

  • CWE-77: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
  • CWE-93: CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments

Additional References

References