EUVD-2025-203918

Mattermost versions 11.0.x = 11.0.4, 10.12.x = 10.12.2, 10.11.x = 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request...

GHSA-J5VQ-62GR-8V3R Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in

Mattermost versions 11.0.x = 11.0.4, 10.12.x = 10.12.2, 10.11.x = 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request...

CVE-2025-12689

Mattermost versions 11.0.x = 11.0.4, 10.12.x = 10.12.2, 10.11.x = 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request...

Improper Validation of Specified Type of Input

Overview github.com/mattermost/mattermost-plugin-calls is a package for voice calling and screen sharing functionality in Mattermost channels. Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input via the WebSocket request handling. An attacker can cau...

CVE-2025-12689 DoS in Calls plugin via malformed UTF-8 in WebSocket request

Mattermost versions 11.0.x = 11.0.4, 10.12.x = 10.12.2, 10.11.x = 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request...

CVE-2025-12689 DoS in Calls plugin via malformed UTF-8 in WebSocket request

Mattermost versions 11.0.x = 11.0.4, 10.12.x = 10.12.2, 10.11.x = 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request...

CVE-2025-12689

Mattermost is affected by CVE-2025-12689 due to improper validation of WebSocket input in the Calls plugin (github.com/mattermost/mattermost-plugin-calls), allowing a malformed UTF-8 WebSocket request to crash the Calls plugin. Affected Mattermost releases include 11.0.x <= 11.0.4, 10.12.x &lt...

Moderate: Red Hat Security Advisory: qemu-kvm security update

An update for qemu-kvm is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

qemu-kvm: VNC WebSocket handshake use-after-free

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network acces...

RHEL 9 : qemu-kvm (RHSA-2025:23228)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:23228 advisory. Kernel-based Virtual Machine KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the...

Mattermost 安全漏洞

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability in Mattermost versions 11.0.4 and prior 11.0.x, 10.12.2 and prior 10.12.x, and 10.11.6 and prior 10.11.x stems from an unchecked UTF-8 formatting of WebSocket request fields,...

PT-2025-51852

Name of the Vulnerable Software and Affected Versions Mattermost versions 11.0.x through 11.0.4 Mattermost versions 10.11.x through 10.11.6 Mattermost versions 10.12.x through 10.12.2 Description The software does not properly validate the UTF-8 format of WebSocket requests. This allows an attack...

CVE-2025-61987

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed...

Authorization Bypass

Spring Framework is vulnerable to an Authorization Bypass. The vulnerability is due to improper enforcement of authorization checks in STOMP over WebSocket message handling, which allows an attacker to send unauthorized messages and bypass intended security controls...

CVE-2025-61987

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed...

CVE-2025-61987

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed...

CVE-2025-61987

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed...

CVE-2025-61987

CVE-2025-61987 affects GroupSession variants: Free edition prior to 5.3.0, byCloud prior to 5.3.3, and ZION prior to 5.3.2. The root cause is lack of origin validation in WebSockets, which may allow exposure of chat information to users accessing crafted pages. Affected software is GroupSession (...

EUVD-2025-203021

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed...

CVE-2025-61987

GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed...