CVE-2026-14556
HappyForms < 1.26.15 - Unauthenticated HTML Injection in Admin Notification Email via client_referer
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | unknown |
| Product | happyforms |
| Published | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Unknown / HappyForms
0 < 1.26.15
References
Credits
minaruzzaman shovon WPScan