Arbitrary file read in Mattermost Boards via import & export board archive
53Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.9epss 24%
from disclosure to weapon0 days
Published on NVDFeb 24
1st PoCFeb 24
exploitation probability
24%top 2% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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 · Mattermostpublic PoCs found — 2
githubgithub.com/numanturle/CVE-2025-25279★ 4githubgithub.com/AbokorMAHAMMADMOUSSE/CVE-2025-25279-Mattermost-Path-Traversal★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://mattermost.com/security-updates