CVE-2026-4643 Calling window.close() from server-side content causes crash in the Mattermost Desktop App

Mattermost Desktop App versions =6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking window.close in the renderer context, leading to...

CVE-2026-4643

Mattermost Desktop App versions ≤ 6.1, 6.0.1, and 5.4.13.0 are affected by a flaw where server-rendered content can invoke window.close() in the renderer context, causing the underlying application view to close and yielding a client‑level denial of service. Root cause: the app fails to prevent s...

PT-2026-41651

Mattermost Desktop App versions =6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling window.open'javascript:alert';. Mattermost Advisory ID: MMSA-2026-00...

PT-2026-41654

Mattermost Desktop App versions =6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking window.close in the renderer context, leading to...

Mattermost Desktop App 代码问题漏洞

The Mattermost Desktop App is a desktop application for message communication developed by the American company Mattermost. Versions 6.1, 6.0.1, and 5.4.13.0 of the Mattermost Desktop App have code vulnerabilities. These vulnerabilities stem from a failure to prevent servers from rendering conten...

Mattermost Desktop App 安全漏洞

The Mattermost Desktop App is a desktop application for message communication developed by the American company Mattermost. Versions 6.1, 6.0.1, and 5.4.13.0 of the Mattermost Desktop App have security vulnerabilities. These vulnerabilities stem from a failure to prevent invalid URLs from being...

[SECURITY] Fedora 43 Update: yelp-49.1-1.fc43

Yelp is the help browser for the GNOME desktop. It is designed to help you browse all the documentation on your system in one central tool, including traditional man pages, info pages and documentation written in DocBook...

[SECURITY] Fedora 43 Update: freerdp-3.26.0-4.fc43

The xfreerdp & wlfreerdp Remote Desktop Protocol RDP clients from the FreeR DP project. xfreerdp & wlfreerdp can connect to RDP servers such as Microsoft Windows machines, xrdp and VirtualBox...

Microsoft 365 Copilot < 19.2604.43111.0 Spoofing (CVE-2026-41614)

The Windows 'Microsoft 365 Copilot' app formerly known as 'Microsoft 365 Office' installed on the remote host is prior to 19.2604.43111.0. It is, therefore, affected by a spoofing vulnerability: - Improper access control in Microsoft 365 Copilot for Desktop allows an unauthorized attacker to...

Microsoft Power Automate for Desktop < 2.68.237.26118 Information Disclosure (May 2026)

The version of Microsoft Power Automate for desktop installed on the remote Windows host is prior to 2.68.237.26118. It is, therefore, affected by an information disclosure vulnerability: - Exposure of sensitive information to an unauthorized actor in Power Automate allows an authorized attacker ...

CVE-2026-44467

The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in /.ssh/knownhosts without comparing the server's...

CVE-2026-44586

SiYuan is an open-source personal knowledge management system. From 2.1.12 to before 3.7.0. SiYuan's Bazaar marketplace renders package author metadata from the public bazaar stage feed into HTML without escaping. In the desktop app this becomes stored XSS, and because SiYuan's Electron windows a...

CVE-2026-44514

Kubetail is a real-time logging dashboard for Kubernetes. Prior to 0.14.0, Kubetail's dashboard exposes WebSocket endpoints that did not adequately validate the Origin header on connection upgrade. A malicious web page visited by a user with an active Kubetail session could open a WebSocket to th...

RLSA-2026:16482 Moderate: freerdp security update

FreeRDP is a free implementation of the Remote Desktop Protocol RDP, released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox. Security Fixes: freerdp: FreeRDP: Denial of service due to use-after-free vulnerability...

Amazon Linux 2 : xdg-desktop-portal, --advisory ALAS2-2026-3298 (ALAS-2026-3298)

The version of xdg-desktop-portal installed on the remote host is prior to 1.0.2-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3298 advisory. Flatpak xdg-desktop-portal before 1.20.4 and 1.21.x before 1.21.1 allows any Flatpak app to trash any file in the host...

Medium: xdg-desktop-portal

Issue Overview: Flatpak xdg-desktop-portal before 1.20.4 and 1.21.x before 1.21.1 allows any Flatpak app to trash any file in the host context via a symlink attack on gfiletrash. CVE-2026-40354 Affected Packages: xdg-desktop-portal Note: This advisory is applicable to Amazon Linux 2 AL2 Core...

CVE-2026-41614

Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally...

CVE-2026-35419

Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally...

CVE-2026-40398

Heap-based buffer overflow in Windows Remote Desktop allows an authorized attacker to elevate privileges locally...

CVE-2026-44470

The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. Prior to 1.3834.0, the CoworkVMService component in Claude Desktop for Windows ran as SYSTEM and did not validate whether the VM bundle directory was a real directory or an NT...