[ CVE-2026-14556 · Published 21 Oct 2026 ]
Vulnerability in Unknown HappyForms
CVSS 5.4
EPSS <1%No fix listed yet
[ Description ]Official description
The HappyForms WordPress plugin before 1.26.15 does not sanitise or escape a user-controlled referral value before embedding it in the form notification email, allowing unauthenticated attackers to inject arbitrary HTML into the emails site administrators receive.
[ 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.