5.4
Medium
CVE-2026-86833 The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting…
Description
The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| MetForm 4.3 | earliest → < 4.3.1 | 4.3.1 |
Other CVEs of MetForm
The 4 CVEs of MetForm →
CVE-2026-86832
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to form submission data, allowing…
5.3
Medium
CVE-2026-86834
The MetForm WordPress plugin before 4.3.1 does not properly restrict access to a debug file it writes to the web root…
3.7
Low
CVE-2026-86813
The MetForm WordPress plugin before 4.1.9 does not properly neutralize newline characters in user-submitted values…
4.8
Medium