Missing Authorization Affecting github.com/mattermost/mattermost/server/channels/api4 package, versions >=10.11.0 <10.11.16>=11.5.0 <11.5.5>=11.6.0 <11.6.2>=11.7.0-rc1 <11.7.0-rc4
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-GITHUBCOMMATTERMOSTMATTERMOSTSERVERCHANNELSAPI4-17705265
- published30 Jun 2026
- disclosed12 Jun 2026
- creditUnknown
Introduced: 12 Jun 2026
CVE-2026-6689 (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost/server/channels/api4 to version 10.11.16, 11.5.5, 11.6.2, 11.7.0-rc4 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization in the team creation process. An attacker can configure unauthorized team settings, such as enabling open invites or restricting allowed domains, by sending crafted requests to the relevant API endpoint.