CVE-2025-21088
Medium
Description
Mattermost versions 10.2.x <= 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 the style of proto supplied to an action's style in post.props.attachments, which allows an attacker to crash the frontend via crafted malicious input.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Mattermost Server
PublishedJan 15, 2025
First seenJan 15, 2025
Weakness typeCWE-704CWE-704
How to fix
Update
- mattermost mattermost_server9.11.6, 10.0.4, 10.1.4 or later
- github.com/mattermost/mattermost/server/v810.2.1, 10.1.4, 10.0.4, 9.11.6, 8.0.0-20241127161322-25ff7a3779a5 or later
- github.com/mattermost/mattermost-server9.11.6+incompatible, 10.0.4+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 | 9.11.6, 10.0.4, 10.1.4 |
| github.com/mattermost/mattermost/server/v8Go | 10.2.0 ≤ v < 10.2.1, 10.1.0 ≤ v < 10.1.4, 10.0.0 ≤ v < 10.0.4, 9.11.0 ≤ v < 9.11.6, v < 8.0.0-20241127161322-25ff7a3779a5 | 10.2.1, 10.1.4, 10.0.4, 9.11.6, 8.0.0-20241127161322-25ff7a3779a5 |
| github.com/mattermost/mattermost-serverGo | 9.11.0+incompatible ≤ v < 9.11.6+incompatible, 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 | 9.11.6+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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