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CVE-2026-4643
3.5 LOW
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): Low (L)
- User Interaction (UI): Required (R)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): Low (L)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): Low (L)
- Modified User Interaction (MUI): Required (R)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): Low (L)
Activity log
- Created suggestion
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 a denial of service condition at the client level. Mattermost Advisory ID: MMSA-2026-00633
References
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MMSA-2026-00633 vendor-advisory
Affected products
Mattermost
- ==5.13.5.0
- ==6.1.1.0
- ==6.2.0
- =<6.0.1
- =<5.4.13
Matching in nixpkgs
pkgs.mattermost
Open source platform for secure collaboration across the entire software development lifecycle
pkgs.mattermostLatest
Open source platform for secure collaboration across the entire software development lifecycle
pkgs.mattermost-desktop
Mattermost Desktop client
pkgs.python312Packages.mattermostdriver
Python Mattermost Driver
pkgs.python313Packages.mattermostdriver
Python Mattermost Driver
pkgs.python314Packages.mattermostdriver
Python Mattermost Driver
Package maintainers
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@numinit Morgan Jones <me+nixpkgs@numin.it>
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@Kranzes Ilan Joselevich <personal@ilanjoselevich.com>
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@mgdelacroix Miguel de la Cruz <mgdelacroix@gmail.com>
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@ryantm Ryan Mulligan <ryan@ryantm.com>
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@jokogr Ioannis Koutras <ioannis.koutras@gmail.com>
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@yayayayaka Yaya <github@uwu.is>
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@liff Olli Helenius <liff@iki.fi>
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@globin Robin Gloster <mail@glob.in>