Ruby IMAP Library CRLF Injection

The vulnerability in the client API library for the IMAP protocol in Ruby is related to the failure to implement measures to neutralize CRLF sequences. Exploiting this vulnerability allows an attacker to execute arbitrary IMAP commands remotely...

CVE-2026-42257: Improper Neutralization of CRLF Sequences

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, several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled...

CVE-2006-0377

CRLF injection vulnerability in SquirrelMail 1.4.0 to 1.4.5 allows remote attackers to inject arbitrary IMAP commands via newline characters in the mailbox parameter of the sqimapmailboxselect command, aka "IMAP injection."...