CVE-2026-115303
CVE-2026-115303 · Contact Form by Supsystic < 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping
This page contains facts from public vulnerability sources. Check the original advisory before updating.
The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.
CVSS 3.7 · Low · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
contact form by supsystic
- Versions
- ≥ 0, < 1.11.1: Affected (semver)
Update to 1.11.1