CVE-2025-48203: TYPO3 Cs Seo Extension

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The cs_seo extension through 9.2.0 for TYPO3 allows XSS.

Affected products

• TYPO3 Cs Seo Extension: from 6.3.0, before 6.8.0 (fixed in 6.8.0); from 7.0.0, before 7.5.0 (fixed in 7.5.0); from 8.0.0, before 8.4.0 (fixed in 8.4.0); from 9.0.0, before 9.3.0 (fixed in 9.3.0)

Published 2025-05-21. Last modified 2026-06-17.