PT-2025-34194 · Mattermost · Mattermost

Dawid Kulikowski · Published 2025-08-21 · Updated 2025-08-29 · CVE-2025-36530

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mattermost versions 10.5.x through 10.5.8 Mattermost versions 10.8.x through 10.8.3 Mattermost versions 10.9.x through 10.9.1 Mattermost versions 9.11.x through 9.11.17

Description: The Mattermost application does not properly validate file paths during plugin import operations. This allows restricted administrator users to install unauthorized custom plugins through a path traversal vulnerability in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.

Recommendations: Update Mattermost to a version later than 10.5.8. Update Mattermost to a version later than 10.8.3. Update Mattermost to a version later than 10.9.1. Update Mattermost to a version later than 9.11.17.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2025-36530

GHSA-GQ3R-5833-5532

GO-2025-3901

Affected Products

Mattermost

References · 12

• https://osv.dev/vulnerability/CVE-2025-36530 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-gq3r-5833-5532 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2025-3901 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-36530 · Security Note
• https://github.com/mattermost/mattermost · Note
• https://github.com/advisories/GHSA-gq3r-5833-5532 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-36530 · Note
• https://mattermost.com/security-updates · Note
• https://t.me/CVEtracker/30566 · Telegram Post
• https://pkg.go.dev/vuln/GO-2025-3901 · Note
• https://twitter.com/VulmonFeeds/status/1958491526901760265 · Twitter Post
• https://twitter.com/CVEnew/status/1958432107191038277 · Twitter Post