Incorrect Authorization Affecting github.com/mattermost/mattermost/server/v8/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-GITHUBCOMMATTERMOSTMATTERMOSTSERVERV8CHANNELSAPI4-17669859
- published29 Jun 2026
- disclosed12 Jun 2026
- creditNeganSpl01t
Introduced: 12 Jun 2026
CVE-2026-6739 (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost/server/v8/channels/api4 to version 10.11.16, 11.5.5, 11.6.2, 11.7.0-rc4 or higher.
Overview
github.com/mattermost/mattermost/server/v8/channels/api4 is a platform for secure collaboration across the entire software development lifecycle
Affected versions of this package are vulnerable to Incorrect Authorization in the role patch API. An attacker can gain elevated privileges by modifying permissions of built-in roles through authenticated requests with delegated user-management permissions.