WID-SEC-W-2025-1625

csafDEcert_bund

DeutschShown in its original language — a full translation is planned for a future version.

Mattermost Server und Plugins: Mehrere Schwachstellen

view advisory published 2025-07-22

Ein authentifizierter Angreifer mit bestimmten Berechtigungen kann diese Schwachstellen ausnutzen, um Sicherheitsmechanismen zu umgehen, beliebige Dateien in das Dateisystem einzubringen und potenziell beliebigen Code auszuführen.

01

describes (9)

Related CVEs.

IDseverity exploitable
CVE-2025-8402US——
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to validate import data which allows a system admin to crash th…
CVE-2025-6465US——
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite…
CVE-2025-8023USmedium4.9—
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fails to sanitize path traversal sequences in template file destination paths, which all…
CVE-2025-53971US—OT elevated—
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate authorization for team scheme role modifications which allows Team Admins to demote Team Members t…
CVE-2025-49810USmedium4.3OT elevated—
Mattermost versions 10.5.x <= 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts
CVE-2025-49222USmedium6.8—
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions whic…
CVE-2025-47870USmedium4.3OT elevated—
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fail to sanitize the team invite ID in the POST /api/v4/teams/:teamId/restore endpoint…
CVE-2025-47700US——
Mattermost Server versions 10.5.x <= 10.5.9 utilizing the Agents plugin fail to reject empty request bodies which allows users to trick users into clicking malicious links via post…
CVE-2025-36530USmedium4.9—
Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restri…
02

references

External citations — patches, advisories, analysis.

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan