Important: Red Hat Security Advisory: ruby security update

An update for ruby is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

TencentOS Server 2: dovecot (TSSA-2026:0831)

The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0831 advisory. Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:...

dovecot security update

1:2.2.36-8.0.3 - Backport fix for CVE-2026-42006 Orabug: 39820967 1:2.2.36-8.0.1 - Backport fix for CVE-2025-59032 Orabug: 39573795 - Backport fix for CVE-2026-27856 Orabug: 39573795 - Backport fix for CVE-2026-27857 Orabug: 39573795 - Backport fix for CVE-2026-27858 Orabug: 39573795...

MiracleLinux 8 : ruby:3.3 (AXSA:2026-1503:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1503:01 advisory. zlib: zlib: Memory corruption via buffer overflow in Zlib::GzipReader CVE-2026-27820 net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF...

Alibaba Cloud Linux 3 : 0245: dovecot (ALINUX3-SA-2026:0245)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2026:0245 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2026-42006: An attacker can cause uncontrolled...

EulerOS 2.0 SP11 : ruby (EulerOS-SA-2026-3101)

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in...

EulerOS 2.0 SP11 : ruby (EulerOS-SA-2026-3155)

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : ERB is a templating system for Ruby. Ruby 2.7.0 before ERB 2.2.0 was published on rubygems.org introduced an @init instance variable guard in...

EulerOS 2.0 SP13 : mutt (EulerOS-SA-2026-3032)

According to the versions of the mutt packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP authcram MD5 digest.CVE-2026-43859 In mutt before 2.3.2, the imapauthgss...

EulerOS 2.0 SP13 : ruby (EulerOS-SA-2026-3047)

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : 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,...

EulerOS 2.0 SP13 : mutt (EulerOS-SA-2026-2982)

According to the versions of the mutt packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP authcram MD5 digest.CVE-2026-43859 In mutt before 2.3.2, the imapauthgss...

EulerOS 2.0 SP15 : mutt (EulerOS-SA-2026-2898)

According to the versions of the mutt packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : mutt before 2.3.2 sometimes truncates the hashpasswd by one byte for IMAP authcram MD5 digest.CVE-2026-43860 mutt before 2.3.2 has an infinite loop ...

TencentOS Server 3: dovecot (TSSA-2026:0810)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0810 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

EulerOS 2.0 SP13 : ruby (EulerOS-SA-2026-2997)

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : 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,...

net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF sequences in unvalidated input

A flaw was found in Net::IMAP before 0.4.24, 0.5.14, and 0.6.4. Several commands accept raw string arguments sent to the server without validation or escaping; if derived from user-controlled input, CRLF sequences allow injection of arbitrary IMAP commands...

net-imap: Net::IMAP: Arbitrary IMAP command injection due to improper input validation

A flaw was found in Net::IMAP, a Ruby library that implements Internet Message Access Protocol IMAP client functionality. This vulnerability arises from improper input validation when handling ID field values and arguments to the enable command. A remote attacker could exploit this by injecting...

ruby/net-imap: ruby: Net::IMAP: Denial of Service via large iteration count in SCRAM authentication

A flaw was found in Net::IMAP, a Ruby library for Internet Message Access Protocol IMAP client functionality. A hostile server can exploit this vulnerability during SCRAM-SHA1 or SCRAM-SHA256 Salted Challenge Response Authentication Mechanism - Secure Hash Algorithm 1 or 256 authentication by...

net-imap: rubygem-net-imap: Net::IMAP: Denial of Service via malformed command input

A flaw was found in Net::IMAP, a Ruby client library for the Internet Message Access Protocol IMAP. This vulnerability allows a remote attacker to cause a denial of service by sending specially crafted input to certain Net::IMAP commands. When a raw string argument, derived from user-controlled...

net-imap: Net::IMAP: Command injection via non-synchronizing literals

A flaw was found in Net::IMAP, a Ruby library that provides Internet Message Access Protocol IMAP client functionality. This vulnerability allows a remote attacker to inject arbitrary IMAP commands. This is possible when an IMAP server does not support non-synchronizing literals, leading to the...

Important: Red Hat Security Advisory: ruby:4.0 security, bug fix, and enhancement update

An update for the ruby:4.0 module is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

net-imap: Net::IMAP: Command injection via non-synchronizing literals

A flaw was found in Net::IMAP, a Ruby library that provides Internet Message Access Protocol IMAP client functionality. This vulnerability allows a remote attacker to inject arbitrary IMAP commands. This is possible when an IMAP server does not support non-synchronizing literals, leading to the...