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-2026-47241

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...

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...

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...

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...

SUSE SLED15 / SLES15 Security Update : mutt (SUSE-SU-2026:2301-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2301-1 advisory. This update for mutt fixes the following issues - CVE-2026-43859: strfcpy used instead of memcpy for the IMAP...

SUSE SLES12 Security Update : mutt (SUSE-SU-2026:2300-1)

The remote SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2300-1 advisory. This update for mutt fixes the following issues - CVE-2026-43859: strfcpy used instead of memcpy for the IMAP authcram MD5 digest bsc1263897. -...

Arbitrary Command Injection

Overview Affected versions of this package are vulnerable to Arbitrary Command Injection via the handling of raw data arguments in IMAP commands id and enable. An attacker can inject arbitrary IMAP commands by supplying specially crafted input containing CRLF sequences as arguments. This may allo...

GHSA-46Q3-7GV7-QMGG Net::IMAP: Command Injection via ID command argument

Summary Two Net::IMAP commands, id and enable, do not validate their arguments. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. Please note that passing untrusted inputs to these commands is usually inappropriate and expected to be uncommon. Details Whe...

Net::IMAP: Command Injection via ID command argument

Summary Two Net::IMAP commands, id and enable, do not validate their arguments. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. Please note that passing untrusted inputs to these commands is usually inappropriate and expected to be uncommon. Details Whe...

GHSA-C4FP-CXRR-MJ66 Net::IMAP: Denial of Service via incomplete raw argument validation

Summary 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 input, an attacker can force the next command to be absorbed as a continuation of the first command. This will...

Net::IMAP: Denial of Service via incomplete raw argument validation

Summary 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 input, an attacker can force the next command to be absorbed as a continuation of the first command. This will...

Collapse of Data into Unsafe Value

Overview Affected versions of this package are vulnerable to Collapse of Data into Unsafe Value incomplete validation of raw string arguments in certain IMAP command parameters such as criteria, searchkeys and attr. An attacker can cause commands to hang or trigger timeouts by supplying specially...

GHSA-8P34-64R3-MWG8 Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument

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 literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals. Details Raw...

Arbitrary Command Injection

Overview Affected versions of this package are vulnerable to Arbitrary Command Injection via the handling of raw data arguments in IMAP commands such as criteria, searchkeys and attr. An attacker can execute arbitrary IMAP commands by injecting CRLF sequences into user-controlled input, which are...

PT-2026-48341

Name of the Vulnerable Software and Affected Versions Net::IMAP versions prior to 0.5.15 Net::IMAP versions prior to 0.6.5 Description Several commands in the Net::IMAP Ruby client accept raw string arguments that are only validated to prevent CRLF injection and are then sent verbatim. An incorre...