CVE-2025-20033
Medium
Description
Mattermost versions 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate post types, which allows attackers to deny service to users with the sysconsole_read_plugins permission via creating a post with the custom_pl_notification type and specific props.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mattermost Server
PublishedJan 9, 2025
First seenJan 9, 2025
Weakness typeCWE-1287CWE-1287
How to fix
Update
- mattermost mattermost_server9.11.6, 10.0.4, 10.1.4, 10.2.1 or later
- github.com/mattermost/mattermost/server/v89.11.16, 10.0.4, 10.1.4, 10.2.1, 8.0.0-20250102081831-64c566a8280b or later
- github.com/mattermost/mattermost-server10.0.4+incompatible, 10.1.4+incompatible, 10.2.1+incompatible or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_server | 9.11.0 ≤ v < 9.11.6, 10.0.0 ≤ v < 10.0.4, 10.1.0 ≤ v < 10.1.4, 10.2.0 ≤ v < 10.2.1 | 9.11.6, 10.0.4, 10.1.4, 10.2.1 |
| github.com/mattermost/mattermost/server/v8Go | 9.11.0 ≤ v < 9.11.16, 10.0.0 ≤ v < 10.0.4, 10.1.0 ≤ v < 10.1.4, 10.2.0 ≤ v < 10.2.1, v < 8.0.0-20250102081831-64c566a8280b | 9.11.16, 10.0.4, 10.1.4, 10.2.1, 8.0.0-20250102081831-64c566a8280b |
| github.com/mattermost/mattermost-serverGo | 10.0.0+incompatible ≤ v < 10.0.4+incompatible, 10.1.0+incompatible ≤ v < 10.1.4+incompatible, 10.2.0+incompatible ≤ v < 10.2.1+incompatible | 10.0.4+incompatible, 10.1.4+incompatible, 10.2.1+incompatible |
| github.com/mattermost/mattermost-server/v5Go | No range specified | — |
| github.com/mattermost/mattermost-server/v6Go | No range specified | — |
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