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...

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...

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,...

EUVD-2023-3066

Malicious code in bioql PyPI...

CVE-2023-5967

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

CVE-2023-6459 Public endpoint /metrics of Calls plugin reveals channel IDs

Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Since this id is the channelID, the public /metrics endpoint is revealing channelIDs...

CVE-2023-6459 Public endpoint /metrics of Calls plugin reveals channel IDs

Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Since this id is the channelID, the public /metrics endpoint is revealing channelIDs...

Mattermost Server < 7.8.12 / 8.0.x < 8.0.4 / 8.1.x < 8.1.3 / 9.0.0 Multiple Vulnerabilities (MMSA-2023-00240) (MMSA-2023-00242) (MMSA-2023-00246)

The version of Mattermost Server running on the remote host is prior to 7.8.12, 8.0.x prior to 8.0.3, 8.1.x prior to 8.1.3 or 9.0.0. It is, therefore, affected by multiple vulnerabilities: - Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request...

GHSA-XVQ6-H898-WCJ8 Mattermost denial of service vulnerability

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

Mattermost denial of service vulnerability

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

Design/Logic Flaw

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

CVE-2023-5967 Denial of Service via crashing the Calls Plugin

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

CVE-2023-5967 Denial of Service via crashing the Calls Plugin

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

CVE-2023-5967 Denial of Service via crashing the Calls Plugin

Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin...

CVE-2023-5967

Summary: CVE-2023-5967 affects Mattermost. The vulnerability arises from improper validation of requests to the Calls plugin, specifically when a request is sent without a User-Agent header. This can cause a panic and crash the Calls plugin, leading to a Denial of Service. The issue is described ...

Mattermost Code Issues Vulnerabilities

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. Mattermost suffers from a security vulnerability that stems from not properly validating requests to the Calls plugin, which allows an attacker to crash the Calls plugin when sending a request without...

CVE-2021-34656

The 2Way VideoCalls and Random Chat - HTML5 Webcam Videochat WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the vwsnotice function found in the /inc/requirements.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 5.2.7...