CVE-2025-20051

Arbitrary file read via block duplication in Mattermost Boards

State: Published
Severity: 9.9 Critical
Published: Feb 24, 2025
Updated: Feb 24, 2025
Reserved: Feb 18, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	9.9 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	Mattermost

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
MattermostMattermost	10.4.0 through 10.4.1Affected 9.11.0 through 9.11.7Affected 10.3.0 through 10.3.2Affected 10.2.0 through 10.2.2Affected 10.5.0Not affected 10.4.2Not affected 9.11.8Not affected 10.3.3Not affected 10.2.3Not affected

References

https://mattermost.com/security-updates

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