CVE-2018-5478: Contao

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.

Affected products

• Contao Contao: from 3.0.0, before 3.5.32 (fixed in 3.5.32)

Published 2023-09-21. Last modified 2026-06-17.