RLSA-2026:19364 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 CVE-2026-6918

In Eclipse Open9J versions 0.21 to 0.58, a pre-authentication remote attacker can crash JITServer by sending a 32-byte crafted TCP message...

CVE-2026-9490

A security vulnerability has been identified in Acer Care Center where the ACCSvc service creates a Named Pipe with a weak Security Descriptor. This vulnerability allows an authenticated local user to connect and send a specially crafted message message type 0x03 to the pipe, causing the service ...

Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: libupnp (UTSA-2026-016655)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016655 advisory. Portable UPnP SDK aka libupnp 1.12.1 and earlier allows remote attackers to cause a denial of service crash via a crafted SSDP message due to a NULL pointer...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

CVE-2026-38719

OpENer v2.3-558-g1e99582 contains an out-of-bounds read vulnerability in the Common Packet Format CPF parser, specifically in CreateCommonPacketFormatStructure in source/src/enetencap/cpf.c. A crafted ENIP/CPF message can supply an attacker-controlled itemcount value that is not consistently...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

dovecot: denial of service via crafted message before authentication

A flaw was found in dovecot. An unauthenticated and remote attacker can send a crafted message that causes managesieve to allocate an excessive amount of memory, forcing managesieve-login to be unavailable by repeatedly crashing the process, resulting in a denial of service...

CVE-2026-43406

A flaw was found in libceph in the Linux kernel. A remote attacker could exploit this vulnerability by sending a maliciously crafted message frame. This manipulation, either by corrupting the control segment length or disguising a different frame as a message frame, can cause out-of-bounds reads...

Cross-site Scripting (XSS)

Overview postorius is an A web user interface for GNU Mailman Affected versions of this package are vulnerable to Cross-site Scripting XSS via the rendering process of the message subject in the Held messages pop-up. An attacker can execute arbitrary scripts in the context of the user's browser b...

RockyLinux 9 : dovecot (RLSA-2026:13857)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:13857 advisory. dovecot: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command CVE-2025-59032 dovecot: denial of service via crafted...

dovecot security update

1:2.3.16-7 - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161630 - fix CVE-2025-59032: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command RHEL-162282 - fix CVE-2026-27857: denial of service via specially crafted NOOP...

Oracle Linux 9 : dovecot (ELSA-2026-13857)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-13857 advisory. - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161639 - fix CVE-2025-59032: ManageSieve: Denial of Service via...

dovecot security update

1:2.3.16-15.1 - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161639 - fix CVE-2025-59032: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command RHEL-162287 - fix CVE-2026-27857: denial of service via specially crafted NOOP...

Oracle Linux 8 : dovecot (ELSA-2026-13830)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-13830 advisory. - fix CVE-2026-27858: denial of service via crafted message before authentication RHEL-161630 - fix CVE-2025-59032: ManageSieve: Denial of Service via...