[ CVE-2026-86833 · Published 7 Oct 2026 ]
Vulnerability in Unknown MetForm
CVSS 5.4
EPSS <1%No fix listed yet
[ Description ]Official description
The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.