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MEDIUM4.3

GHSA-2549-xh72-qrpm

Mattermost Improper Validation of Specified Type of Input vulnerability

Quick fix

GHSA-2549-xh72-qrpm — github.com/mattermost/mattermost/server/v8: upgrade to the fixed version with the command below.

go get github.com/mattermost/mattermost/server/v8@v9.11.16

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/mattermost/mattermost/server/v8
Introduced in: 9.11.0Fixed in: 9.11.16
Fixgo get github.com/mattermost/mattermost/server/v8@v9.11.16
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 10.0.0Fixed in: 10.0.4
Fixgo get github.com/mattermost/mattermost/server/v8@v10.0.4
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 10.1.0Fixed in: 10.1.4
Fixgo get github.com/mattermost/mattermost/server/v8@v10.1.4
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 10.2.0Fixed in: 10.2.1
Fixgo get github.com/mattermost/mattermost/server/v8@v10.2.1
Go/github.com/mattermost/mattermost/server/v8
Introduced in: 0Fixed in: 8.0.0-20250102081831-64c566a8280b
Fixgo get github.com/mattermost/mattermost/server/v8@v8.0.0-20250102081831-64c566a8280b

References