medium5.4
CVE-2026-14556
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,…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| HappyForms WordPress Plugin | before 1.26.15 |
Versions were read from the advisory text. No structured product data has been published for this record yet.