CVE-2025-8023 — Path Traversal in Mattermost Mattermost-server

CWE-22 — Path Traversal5 documents4 sources
Severity
4.9MEDIUMNVD
CNA6.8
EPSS
0.1%
top 82.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Github.com Mattermost Mattermost-serverGithub.com Mattermost Mattermost Server V8Mattermost Server+3 more
Timeline
PublishedAug 21
Latest updateAug 29

Description

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fails to sanitize path traversal sequences in template file destination paths, which allows a system admin to perform path traversal attacks via malicious path components, potentially enabling malicious file placement outside intended directories.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NExploitability: 1.2 | Impact: 3.6

Affected Packages6 packages

▶NVDmattermost/mattermost_server9.11.0 — 9.11.18+3
▶Gogithub.com/mattermost_mattermost_server_v8< 8.0.0-20250708065844-b38e2eccda18
▶CVEListV5mattermost/mattermost10.8.0 — 10.8.3+3

🔴Vulnerability Details

4
OSV
Mattermost Fails to Sanitize Path Traversal Sequences in github.com/mattermost/mattermost-server↗2025-08-29
▶
OSV
Mattermost Fails to Sanitize Path Traversal Sequences↗2025-08-21
▶
GHSA
Mattermost Fails to Sanitize Path Traversal Sequences↗2025-08-21
▶
CVEList
Path Traversal in Template Upload Allows Uploading Files Outside Target Directory↗2025-08-21
▶
CVE-2025-8023 — Path Traversal | cvebase