CVE-2026-42258 net-imap: Command Injection via unvalidated Symbol inputs

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 ...

CVE-2026-42258 net-imap: Command Injection via unvalidated Symbol inputs

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 ...

CVE-2026-42258

The Net::IMAP Ruby library is vulnerable to CRLF Injection and IMAP Command injection due to insufficient validation of Symbol arguments passed to IMAP commands. This flaw affects versions prior to 0.4.24 , 0.5.14 , and 0.6.4 . An attacker can exploit this to inject arbitrary commands into the IM...

net-imap vulnerable to command Injection via unvalidated Symbol inputs

Summary Symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. Details Symbol arguments represent IMAP "system flags", which are formatted as "atoms" with no quoting with a "" prefix. Vulnerable versions of Net::IMAP...