Information Exposure Affecting github.com/mattermost/mattermost/server/channels/store/sqlstore package, versions >=10.11.0 <10.11.16>=11.5.0 <11.5.5>=11.6.0 <11.6.2
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.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERCHANNELSSTORESQLSTORE-17705377
- published30 Jun 2026
- disclosed12 Jun 2026
- creditUnknown
Introduced: 12 Jun 2026
CVE-2026-3433 (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost/server/channels/store/sqlstore to version 10.11.16, 11.5.5, 11.6.2 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure via the role_updated websocket event broadcast process. An attacker can gain unauthorized access to permission scheme change notifications for private teams by connecting to the websocket as an authenticated user with guest-level access.