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.
Advisories

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Fixes

Solution

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Workaround

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History

Wed, 21 Oct 2026 08:45:00 +0000

Type Values Removed Values Added
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.
Title HappyForms < 1.26.15 - Unauthenticated HTML Injection in Admin Notification Email via client_referer
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-10-21T08:38:59.379Z

Reserved: 2026-07-03T09:15:34.925Z

Link: CVE-2026-14556

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-21T09:17:07.173

Modified: 2026-10-21T09:17:07.173

Link: CVE-2026-14556

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.