Description Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension. Remediation References CVE-2018-5478 Related Vulnerabilities MySQL CVE-2021-2009 Vulnerability (CVE-2021-2009) MediaWiki CVE-2025-67476 Vulnerability (CVE-2025-67476) Joomla Cryptographic Issues Vulnerability (CVE-2014-7228) Oracle Application Server Other Vulnerability (CVE-2001-1372) SugarCRM Improper Input Validation Vulnerability (CVE-2017-14509) Severity Medium Classification CVE-2018-5478 CWE-707 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Tags Missing Update Known Vulnerabilities