PT-2026-40030

Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.4-1.1 Description An attacker can cause uncontrolled memory usage via excessive bracing over IMAP. A previous fix was incomplete as it only blocked closing braces, allowing the memory limit to be bypassed using op...

DEBIAN-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...

DEBIAN-CVE-2026-42245

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::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are...

CVE-2026-42256

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. From versions 0.4.0 to before 0.4.24, 0.5.0 to before 0.5.14, and 0.6.0 to before 0.6.4, when authenticating a connection with SCRAM-SHA1 or SCRAM-SHA256, a hostile server can perform a computational...

CVE-2026-43862

A flaw was found in mutt, an email client. The imapauthgss security level, which is used for secure IMAP Internet Message Access Protocol authentication, is mishandled. This vulnerability could allow an attacker to bypass certain security protections, potentially leading to a low impact on data...

GHSA-HM49-WCQC-G2XG net-imap vulnerable to command Injection via "raw" arguments to multiple commands

Summary 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 input, it may contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. Details Net::IMAP's...

GHSA-Q2MW-FVJ9-VVCW net-imap has quadratic complexity when reading response literals

Summary Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. Details For each literal in a response, ResponseReader...

EUVD-2026-26896

mutt before 2.3.2 sometimes truncates the hashpasswd by one byte for IMAP authcram MD5 digest...

EUVD-2026-26895

mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP authcram MD5 digest...

CVE-2026-43859

mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP authcram MD5 digest...

PT-2026-36772

Name of the Vulnerable Software and Affected Versions mutt versions prior to 2.3.2 Description The software sometimes uses the strfcpy function instead of memcpy when handling the IMAP auth cram MD5 digest. This occurs during the authentication process for IMAP servers using the CRAM-MD5 mechanis...

PT-2026-36986

Name of the Vulnerable Software and Affected Versions Net::IMAP affected versions not specified Description Net::IMAP::ResponseReader exhibits quadratic time complexity when processing large responses containing numerous string literals. A hostile server can send specially crafted responses that...

CVE-2026-4873

A flaw was found in curl. A remote attacker could exploit this by initiating an unencrypted connection via IMAP, SMTP, or POP3 and then making a subsequent request to the same host that requires Transport Layer Security TLS. Due to incorrect connection reuse, the subsequent request would bypass t...

thunderbird: Out of bounds read in IMAP parsing

A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were...

curl: CVE-2026-4873: connection reuse ignores TLS requirement

A vulnerability was discovered in libcurl's connection reuse for cleartext-upgrade mail protocols. The vulnerability was that the later transfer's CURLOPTUSESSL option was not properly included if a plaintext connection was already open and reusable. This affected the smtp://, pop3://, and imap:/...

RHEL 9 : python3.12 (RHSA-2026:4746)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:4746 advisory. Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level...

Moderate: python3.11 security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...

Azure Linux 3.0 Security Update: ruby (CVE-2025-25186)

The version of ruby installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-25186 advisory. - Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Starting in version...

Python-Based WhatsApp Worm Spreads Eternidade Stealer Across Brazilian Devices

Cybersecurity researchers have disclosed details of a new campaign that leverages a combination of social engineering and WhatsApp hijacking to distribute a Delphi-based banking trojan named Eternidade Stealer as part of attacks targeting users in Brazil. "It uses Internet Message Access Protocol...

MGASA-2025-0290 Updated ruby packages fix security vulnerabilities

Net::IMAP vulnerable to possible DoS by memory exhaustion. CVE-2025-25186 In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential Denial of Service DoS vulnerability. The method does not impose any limit on the length of the raw cookie value it...