CVE-2025-20051

CRITICAL

Mattermost <10.4.1-10.3.2-10.2.2 - Info Disclosure

Title source: llm
STIX 2.1

Description

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 input when patching and duplicating a board, which allows a user to read any arbitrary file on the system via duplicating a specially crafted block in Boards.

References (1)

Core 1
Core References

Scores

CVSS v3 9.9
EPSS 0.0025
EPSS Percentile 48.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-22
Status published
Products (2)
mattermost/mattermost 0 - 8.0.0-20250122165010-4ed702ccff4eGo
mattermost/mattermost_server 9.11.0 - 9.11.8
Published Feb 24, 2025
Tracked Since Feb 18, 2026