CentOS Linux 8.4 [TuxCare] Security Update: exim / exim-greylist / exim-mon / exim-mysql / exim-pgsql (CENTOS8.4:CLSA-2026:1790608989)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1790608989 advisory. - Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data fro...

Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Exim vulnerabilities (USN-8834-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8834-1 advisory. It was discovered that Exim had an out-of-bounds write when Proxy-Protocol was used with an attacker- controlled proxy. A remote...

SUSE CVE-2026-67411

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

USN-8834-1: Exim vulnerabilities

It was discovered that Exim had an out-of-bounds write when Proxy-Protocol was used with an attacker-controlled proxy. A remote attacker could possibly use this issue to execute arbitrary code. CVE-2026-94054 It was discovered that Exim had a use-after-free when certain non-default TLS settings...

DEBIAN-CVE-2026-67411

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

CVE-2026-67411

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

UBUNTU-CVE-2026-67411

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

CVE-2026-67411

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

CVE-2026-67411 RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

CVE-2026-67411 RabbitMQ: Web MQTT with PROXY Protocol enabled: a loopback-only user permission bypass

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

CVE-2026-67411

The RabbitMQ messaging and streaming broker is vulnerable in versions 3.13.0 to 3.13.17 , 4.0.22 , 4.1.13 , 4.2.8 , and 4.3.2 . When deployed behind a trusted PROXY Protocol frontend, native MQTT and MQTT over WebSocket can lose the proxy-derived client address before the authentication path chec...

EUVD-2026-87229

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

PT-2026-98920

Name of the Vulnerable Software and Affected Versions RabbitMQ versions 3.13.0 through 3.13.17 RabbitMQ versions 4.0.x prior to 4.0.23 RabbitMQ versions 4.1.x prior to 4.1.14 RabbitMQ versions 4.2.x prior to 4.2.9 RabbitMQ versions 4.3.x prior to 4.3.3 Description Native MQTT and MQTT over...

Linux Distros Unpatched Vulnerability : CVE-2026-67411

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted...

CVE-2026-67411: Incorrect Authorization

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3, native MQTT and MQTT over WebSocket behind a trusted PROXY Protocol frontend could lose the proxy-derived client address before the MQTT authentication path checked loopbackusers, causing th...

CVE-2026-94054

A flaw was found in Exim. When the Proxy-Protocol is used with an attacker-controlled proxy, a remote attacker could exploit an out-of-bounds write vulnerability. This could lead to data corruption, denial of service, or potentially arbitrary code execution, allowing the attacker to execute...

CVE-2026-94056

A flaw was found in Exim. When the Proxy-Protocol is used with an attacker-controlled proxy, an attacker can read certain uninitialized data from stack memory. This information disclosure could potentially expose sensitive data. Mitigation To prevent information disclosure, ensure that Exim is no...

SUSE CVE-2026-94054

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write...

SUSE CVE-2026-94056

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: httpd (UTSA-2026-090058)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-090058 advisory. In Apache HTTP Server 2.4.32-2.4.39, when modremoteip was configured to use a trusted intermediary proxy server using the PROXY protocol, a specially crafted PROXY...