Incorrect Authorization Affecting github.com/mattermost/mattermost-plugin-playbooks/server/app package, versions <2.8.0-rc1
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-GITHUBCOMMATTERMOSTMATTERMOSTPLUGINPLAYBOOKSSERVERAPP-16873665
- published24 May 2026
- disclosed18 May 2026
- credit0x7oda7123
Introduced: 18 May 2026
CVE-2026-4286 Â (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost-plugin-playbooks/server/app to version 2.8.0-rc1 or higher.
Overview
github.com/mattermost/mattermost-plugin-playbooks/server/app is a package for reliable and repeatable processes using checklists, automation, and retrospectives
Affected versions of this package are vulnerable to Incorrect Authorization via the PUT API endpoint when updating playbooks. An attacker can remove member access from a playbook by transferring it to another team without proper authorization.