Medium
HappyForms < 1.26.15 - Unauthenticated HTML Injection in Admin Notification Email via client_referer
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.
Announced Source revision 1
Original source ↗CVE-2026-14556
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-14556
HappyForms
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Unknown",
"product": "HappyForms",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.26.15",
"versionType": "semver"
}
],
"collectionURL": "https://wordpress.org/plugins",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-14556
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #45756 · Revision 1
- Added to Heist Feed
- Publisher date