CVE-2020-37248

OfflineIMAP prior to version 8.0.3 is affected by a STARTTLS trust issue: the client trusts the server’s STARTTLS capability before authentication, enabling man-in-the-middle attacks that can exfiltrate credentials in cleartext. This vulnerability can enable an attacker to take over the connectio...

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 bsc1263895...

SUSE-SU-2026:2301-1 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...

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 bsc1263895...

SUSE-SU-2026:2300-1 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...

Important: ruby3.4

Issue Overview: zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstreambufferungets function prepends caller-provided bytes ahead of previously...

Important: ruby4.0

Issue Overview: Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAPstarttls to return "successfully", without starting TLS. This issue has been patched in...

Amazon Linux 2023 : ruby3.4, ruby3.4-bundled-gems, ruby3.4-default-gems (ALAS2023-2026-1807)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1807 advisory. zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader...

Amazon Linux 2023 : ruby4.0, ruby4.0-bundled-gems, ruby4.0-default-gems (ALAS2023-2026-1806)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1806 advisory. Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause...

CVE-2026-42258

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, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched ...

CVE-2026-42006

An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass t...

CVE-2026-42246

Net::IMAP implements Internet Message Access Protocol IMAP client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAPstarttls to return "successfully", without starting TLS. This issue has been patched in versions 0.3.10,...

Fedora 43 : dovecot (2026-693373747f)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-693373747f advisory. CVE-2026-27851: lib-var-expand: Safe filter marks all following pipelines safe. CVE-2026-33603: auth: CRAM-SHA--PLUS channel binding could be faked...

USN-8365-1: Dovecot vulnerabilities

It was discovered that Dovecot incorrectly treated some variable expansion pipelines as safe in authentication filters. An attacker could possibly use this issue to perform SQL or LDAP injection attacks. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. CVE-2026-27851 It was discovered...

[SECURITY] Fedora 43 Update: dovecot-2.4.4-1.fc43

Dovecot is an IMAP server for Linux/UNIX-like systems, written with security primarily in mind. It also contains a small POP3 server. It supports mail in either of maildir or mbox formats. The SQL drivers and authentication plug-ins are in their subpackages...

[SECURITY] Fedora 44 Update: dovecot-2.4.4-1.fc44

Dovecot is an IMAP server for Linux/UNIX-like systems, written with security primarily in mind. It also contains a small POP3 server. It supports mail in either of maildir or mbox formats. The SQL drivers and authentication plug-ins are in their subpackages...

Fedora 44 : dovecot (2026-96eeb03b88)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-96eeb03b88 advisory. CVE-2026-27851: lib-var-expand: Safe filter marks all following pipelines safe. CVE-2026-33603: auth: CRAM-SHA--PLUS channel binding could be faked...

[SECURITY] Fedora 43 Update: nginx-1.30.2-1.fc43

Nginx is a web server and a reverse proxy server for HTTP, SMTP, POP3 and IMAP protocols, with a strong focus on high concurrency, performance and low memory usage...

python3 security update

An update is available for python3. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Python is an interpreted, interactive, object-oriented programming language,...

CLSA-2026-1779378574 dovecot: Fix of 2 CVEs

CVE-2026-42006: lib-imap: fix listcountlimit to actually count open '' instead of close '', preventing an imap-login memory-exhaustion DoS that bypassed the CVE-2026-27857 fix...