CVE-2026-47344

UNKNOWN 0.0

TYPO3 HTML Sanitizer allows Cross-Site Scripting

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

When ALLOW_INSECURE_RAW_TEXT is enabled, whitespace-variant closing tags (e.g., </style\t>) are not recognized by the sanitizer but accepted by browsers as valid end tags, allowing subsequent content to escape sanitization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.

CWE	CWE-79 CWE-436
Vendor	typo3
Product	html sanitizer
Published	Jun 8, 2026
Last Updated	Jun 8, 2026

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Affected Versions

TYPO3 / HTML Sanitizer

0 < 2.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

typo3.org: https://typo3.org/security/advisory/typo3-core-sa-2026-006 github.com: https://github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c

Credits

🔍 IPC Labs Oliver Hader