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.

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History

Mon, 08 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 08 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title TYPO3 HTML Sanitizer allows Cross-Site Scripting
First Time appeared Typo3
Typo3 html Sanitizer
Weaknesses CWE-436
CWE-79
CPEs cpe:2.3:a:typo3:html_sanitizer:*:*:*:*:*:*:*:*
Vendors & Products Typo3
Typo3 html Sanitizer
References
Metrics cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-06-08T19:50:47.479Z

Reserved: 2026-05-19T12:49:25.966Z

Link: CVE-2026-47344

cve-icon Vulnrichment

Updated: 2026-06-08T19:50:40.849Z

cve-icon NVD

Status : Received

Published: 2026-06-08T20:17:01.587

Modified: 2026-06-08T20:17:01.587

Link: CVE-2026-47344

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-08T20:30:06Z

Weaknesses