Missing Origin Validation in WebSockets Affecting github.com/axllent/mailpit/server/websockets package, versions <1.28.2
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-GITHUBCOMAXLLENTMAILPITSERVERWEBSOCKETS-14912579
- published11 Jan 2026
- disclosed10 Jan 2026
- creditOmar Kurt
Introduced: 10 Jan 2026
CVE-2026-22689 Â (opens in a new tab)How to fix?
Upgrade github.com/axllent/mailpit/server/websockets to version 1.28.2 or higher.
Overview
Affected versions of this package are vulnerable to Missing Origin Validation in WebSockets via the CheckOrigin function in the client.go file. An attacker can gain unauthorized access to sensitive email data by tricking a user into visiting a malicious website that establishes a WebSocket connection to the local instance.