Incorrect Authorization Affecting github.com/mattermost/mattermost-plugin-github/server/plugin package, versions <2.7.0-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-GITHUBCOMMATTERMOSTMATTERMOSTPLUGINGITHUBSERVERPLUGIN-17705898
- published30 Jun 2026
- disclosed26 May 2026
- creditUnknown
Introduced: 26 May 2026
CVE-2026-28735 (opens in a new tab)How to fix?
Upgrade github.com/mattermost/mattermost-plugin-github/server/plugin to version 2.7.0-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the OAuth callback process. An attacker can access unauthorized private repositories by modifying the scope parameter in the GitHub authorization URL.