CVE-2026-47344

Low

Description

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.

SeverityLow

CVSS2.1

Exploit probability—

ProductTypo3/html-sanitizer

PublishedJun 8, 2026

First seenJun 8, 2026

Weakness typeCWE-79Cross-site scripting (XSS)CWE-436CWE-436

How to fix

Update

typo3/html-sanitizer2.3.2 or later

Patches

github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c

Vendor advisories

typo3.org/security/advisory/typo3-core-sa-2026-006

Affected products

Product	Affected versions	Fixed in
typo3/html-sanitizerPackagist	v < 2.3.2	2.3.2

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