CVE-2025-25279

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

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.

Affected

Mattermost

CVSS v3.1 NVD

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 MATTERMOST

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

EPSS

24.22% chance of exploitation in the next 30 days, 98th percentile

Published

2025-02-24

Proof-of-concept exploits (2)

• numanturle/CVE-2025-252794★ · 2025-02-25
• AbokorMAHAMMADMOUSSE/CVE-2025-25279-Mattermost-Path-Traversal0★ · 2026-04-24

Security advisories

• https://mattermost.com/security-updates
• advisories/GHSA-5fwx-p6xh-vjrh

References

• CVE Record
• NVD entry

Related

• CVE-2021-23758
• CVE-2021-41773
• CVE-2021-42008
• CVE-2021-43789
• CVE-2021-44228
• CVE-2022-0332