CVE-2026-47242

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAPid is called with a hash argument, although the ID field value strings are correctly quoted escaping quoted specials, they were not validated to prohibit CRLF sequence...

EUVD-2026-38353

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAPid is called with a hash argument, although the ID field value strings are correctly quoted escaping quoted specials, they were not validated to prohibit CRLF sequence...

CVE-2026-47242

Net::IMAP (Ruby) CVE-2026-47242 affects versions before 0.6.5 and 0.5.15. The vulnerability arises because Net::IMAP#id (with a hash argument) and Net::IMAP#enable do not properly validate arguments, allowing CRLF or atom-list injections and causing the #to_s value to be sent verbatim. An attacke...

CVE-2026-47242

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAPid is called with a hash argument, although the ID field value strings are correctly quoted escaping quoted specials, they were not validated to prohibit CRLF sequence...

CVE-2026-47240 Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing...

CVE-2026-47240

Summary of CVE-2026-47240 (Net::IMAP, Ruby) : The vulnerability affects Net::IMAP’s IMAP client in Ruby, where several commands accept a “raw data” argument that is validated but could still be exploited if a server does not support non-synchronizing literals. In that case, a server may interpret...

EUVD-2026-38352

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing...

CVE-2026-47240 Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing...

EUVD-2026-38350

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled inpu...

CVE-2026-47241

Net::IMAP in Ruby (affected: before 0.6.5 and 0.5.15) validates CRLF but may send a user-controlled raw string verbatim, allowing a subsequent command to be absorbed as a continuation of the first. This can cause the first command to fail and block further responses until another command is issue...

CVE-2026-47241 Net::IMAP: Denial of Service via incomplete raw argument validation

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled inpu...

CVE-2026-47241 Net::IMAP: Denial of Service via incomplete raw argument validation

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled inpu...

CVE-2026-47241

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled inpu...

OPENSUSE-SU-2026:21016-1 Security update for mutt

This update for mutt fixes the following issues - CVE-2026-43859: strfcpy used instead of memcpy for the IMAP authcram MD5 digest bsc1263897. - CVE-2026-43860: truncation of hashpasswd by one byte for IMAP authcram MD5 digest bsc1263896. - CVE-2026-43861: missing check for \0 in urlpctdecode...

OPENSUSE-SU-2026:21109-1 Security update for dovecot24

This update for dovecot24 fixes the following issues - CVE-2026-27851: lib-var-expand: safe filter leaks to all following pipelines bsc1265146. - CVE-2026-33603: login: base64 input can contain tabs that bypass IPC protection bsc1265147. - CVE-2026-40016: Sieve: contains/: matches ONxM substring...

SUSE-SU-2026:22185-1 Security update for dovecot24

This update for dovecot24 fixes the following issues - CVE-2026-27851: lib-var-expand: safe filter leaks to all following pipelines bsc1265146. - CVE-2026-33603: login: base64 input can contain tabs that bypass IPC protection bsc1265147. - CVE-2026-40016: Sieve: contains/: matches ONxM substring...

Ruby net-imap < 0.5.15 / 0.6.x < 0.6.4.1 Multiple Vulnerabilities

The version of the net-imap Ruby library installed on the remote host is prior to 0.5.15, or 0.6.x prior to 0.6.4.1. It is, therefore, affected by multiple vulnerabilities. - Several Net::IMAP commands accept a raw data argument that is sent verbatim after validation to prevent command injection...

SUSE CVE-2026-42257

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...

Ubuntu 16.04 LTS / 18.04 LTS : Ruby vulnerabilities (USN-8431-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8431-1 advisory. It was discovered that Ruby's Net::IMAP library did not properly verify that Transport Layer Security TLS encryption was started after issuin...

USN-8431-1 ruby2.3, ruby2.5 vulnerabilities

It was discovered that Ruby's Net::IMAP library did not properly verify that Transport Layer Security TLS encryption was started after issuing a STARTTLS command. A remote attacker could possibly use this issue to perform a machine-in-the-middle attack and silently bypass TLS encryption...