Incorrect Authorization Affecting github.com/mattermost/mattermost/server/channels/app package, versions <9.11.10>=10.4.0 <10.4.4>=10.5.0 <10.5.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Incorrect Authorization vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERCHANNELSAPP-9749616
- published18 Apr 2025
- disclosed16 Apr 2025
- credithackit_bharat
Introduced: 16 Apr 2025
NewCVE-2025-27571 Â (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost/server/channels/app to version 9.11.10, 10.4.4, 10.5.2 or higher.
Overview
github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative
Affected versions of this package are vulnerable to Incorrect Authorization in the SessionHasPermissionToChannel() function, even when the "Allow users to view archived channels" System Console setting is enabled. A user can view metadata of archived channels.