CVE-2025-20051

critical · 9.9

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.

9.9

CVSS

0.6%

EPSS (exploit prob.)

48th

EPSS percentile

2025-02-24

Published

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-22

Affected products

Vendor	Product	Affected versions
mattermost	mattermost_server	>= 9.11.0, < 9.11.8
mattermost	mattermost_server	>= 10.2.0, < 10.2.3
mattermost	mattermost_server	>= 10.3.0, < 10.3.3
mattermost	mattermost_server	>= 10.4.0, < 10.4.2

Check a specific version with /api/v1/cve/match.

References

https://mattermost.com/security-updates

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-20051