Missing Authorization Affecting github.com/mattermost/mattermost-server/server/v8/channels/api4 package, versions <8.0.0-20250822090405-e8c7e7d0252b
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.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERSERVERV8CHANNELSAPI4-13601093
- published17 Oct 2025
- disclosed16 Oct 2025
- creditlordwillmore
Introduced: 16 Oct 2025
NewCVE-2025-41443 Â (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost-server/server/v8/channels/api4 to version 8.0.0-20250822090405-e8c7e7d0252b or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization via the /api/v4/teams/{team_id}/channels/ids endpoint. An attacker can access sensitive channel metadata by sending requests as a guest user.