Vulnerability · Published Aug 21, 2025 · Assigned by Mattermost
CVE-2025-36530Import Path Traversal Enables Unauthorized Unsigned Plugin Installation
Medium 6.8
In plain English
A medium-severity path traversal in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 10.9.2 | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost-server | 10.8.4 | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost-server | 10.5.9 | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost-server | 9.11.18 | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost-server | 10.5.9+incompatible, 10.8.4+incompatible, 10.9.2+incompatible, 9.11.18+incompatible | GO-2025-3901 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2025-3901 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2025-3901 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250619095651-9dd0b3943e55 | GHSA-gq3r-5833-5532 |
| Go | github.com/mattermost/mattermost/server/v8 | no fix listed | GO-2025-3901 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 10.9.0 – through 10.9.110.8.0 – through 10.8.310.5.0 – through 10.5.89.11.0 – through 9.11.17 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N