Important: Red Hat Security Advisory: dovecot security update

An update for dovecot is now available for Red Hat Enterprise Linux 9.6 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...

RLSA-2026:41988 Important: dovecot security update

Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Security Fixes: doveco...

dovecot security update

An update is available for dovecot. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Dovecot is an IMAP server for Linux and other UNIX-like systems, written...

RockyLinux 9 : dovecot (RLSA-2026:41905)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:41905 advisory. dovecot: Dovecot: Denial of Service via excessive IMAP bracing CVE-2026-42006 Tenable has extracted the preceding description block directly from the RockyLinux...

AlmaLinux 10 : dovecot (ALSA-2026:41988)

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:41988 advisory. dovecot: Dovecot: Denial of Service via excessive IMAP bracing CVE-2026-42006 Tenable has extracted the preceding description block directly from the AlmaLinux...

Important: Red Hat Security Advisory: dovecot security update

An update for dovecot is now available for Red Hat Enterprise Linux 10. 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 vulnerability from...

Important: Red Hat Security Advisory: dovecot security update

An update for dovecot 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 vulnerability from t...

ALSA-2026:41905 Important: dovecot security update

Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Security Fixes: doveco...

RHEL 9 : dovecot (RHSA-2026:41905)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:41905 advisory. Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and...

Oracle Linux 10 : dovecot (ELSA-2026-41988)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-41988 advisory. 1:2.3.21-19.1 - fix CVE-2026-42006: fix imapparser listcountlimit to actually work RHEL-188477 Tenable has extracted the preceding description block directly...

RHEL 10 : dovecot (RHSA-2026:41988)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:41988 advisory. Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and...

dovecot security update

1:2.3.21-19.1 - fix CVE-2026-42006: fix imapparser listcountlimit to actually work RHEL-188477...

Important: dovecot security update

Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. Security Fixes: doveco...

SUSE SLES16: dovecot24 / dovecot24-backend-mysql / dovecot24-backend-pgsql / etc (SUSE-SU-2026:22185-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22185-1 advisory. This update for dovecot24 fixes the following issues - CVE-2026-27851: lib-var-expand: safe filter leaks to all following pipeline...

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...

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...

[SECURITY] [DLA 4617-1] dovecot security update

Debian LTS Advisory DLA-4617-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin June 05, 2026 https://wiki.debian.org/LTS Package : dovecot Version : 1:2.3.13+dfsg1-2+deb11u4 CVE ID : CVE-2026-33603 CVE-2026-40020 CVE-2026-42006 Debian Bug : 1136444 Multiple...

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...

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...

CLSA-2026-1779360319 dovecot: Fix of CVE-2026-42006

CVE-2026-42006: fix imap-login listcountlimit to actually limit open '' characters; the previous fix limited closing '' instead, leaving the bracing memory exhaustion vector open...