CVE-2025-25279criticalCWE-22

CVE-2025-25279: critical vulnerability in Mattermost

Arbitrary file read in Mattermost Boards via import & export board archive

Published

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53Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.9epss 24%
from disclosure to weaponsame day
Published on NVDFeb 24
1st PoCFeb 24
Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate board blocks when importing boards which allows an attacker could read any arbitrary file on the system via importing and exporting a specially crafted import archive in Boards.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
Mattermost · Mattermost
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