CVE-2025-9079
High
Description
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to validate import directory path configuration which allows admin users to execute arbitrary code via malicious plugin upload to prepackaged plugins directory
SeverityHigh
CVSS8.0
Exploit probability51. percentile0.6%
Product
Mattermost Server
PublishedSep 19, 2025
First seenSep 19, 2025
Weakness typeCWE-22Path traversal
How to fix
Update
- mattermost mattermost_server9.11.18, 10.5.9, 10.8.4, 10.9.4, 10.10.2 or later
- github.com/mattermost/mattermost-server10.8.4, 10.5.9, 9.11.18, 10.10.2, 10.9.4, 9.11.18+incompatible, 10.5.9+incompatible, 10.8.4+incompatible, 10.9.4+incompatible, 10.10.2+incompatible or later
- github.com/mattermost/mattermost/server/v88.0.0-20250707221302-a8fa77f107ef or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_server | 9.11.0 ≤ v < 9.11.18, 10.5.0 ≤ v < 10.5.9, 10.8.0 ≤ v < 10.8.4, 10.9.0 ≤ v < 10.9.4, 10.10.0 ≤ v < 10.10.2 | 9.11.18, 10.5.9, 10.8.4, 10.9.4, 10.10.2 |
| github.com/mattermost/mattermost-serverGo | 10.8.0 ≤ v < 10.8.4, 10.5.0 ≤ v < 10.5.9, 9.11.0 ≤ v < 9.11.18, 10.10.0 ≤ v < 10.10.2, 10.9.0 ≤ v < 10.9.4, 9.11.0+incompatible ≤ v < 9.11.18+incompatible, 10.5.0+incompatible ≤ v < 10.5.9+incompatible, 10.8.0+incompatible ≤ v < 10.8.4+incompatible, 10.9.0+incompatible ≤ v < 10.9.4+incompatible, 10.10.0+incompatible ≤ v < 10.10.2+incompatible | 10.8.4, 10.5.9, 9.11.18, 10.10.2, 10.9.4, 9.11.18+incompatible, 10.5.9+incompatible, 10.8.4+incompatible, 10.9.4+incompatible, 10.10.2+incompatible |
| github.com/mattermost/mattermost/server/v8Go | v < 8.0.0-20250707221302-a8fa77f107ef | 8.0.0-20250707221302-a8fa77f107ef |
| github.com/mattermost/mattermost-server/v5Go | No range specified | — |
| github.com/mattermost/mattermost-server/v6Go | No range specified | — |
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