Improper Validation of Specified Type of Input 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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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTPLUGINGITHUBSERVERPLUGIN-16873777
- published24 May 2026
- disclosed22 May 2026
- creditMariusz Maik
Introduced: 22 May 2026
CVE-2026-4646 (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 Improper Validation of Specified Type of Input in the API request handlers due to insufficient validation of user-supplied input. An attacker can cause the plugin process to crash by sending a specially crafted HTTP request to the PR details endpoint.