PT-2026-47448 · Typo3 · Sanitize-Html

Ipc Labs + 1 · Published 2026-06-08 · Updated 2026-06-08 · CVE-2026-47344

NVD

CVSS v4.0

2.1

Low

Base vector

AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

When ALLOW INSECURE RAW TEXT is enabled, whitespace-variant closing tags (e.g., ) 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.

Fix

XSS

Weakness Enumeration

CWE-79

CWE-436

Related Identifiers

CVE-2026-47344

Affected Products

Sanitize-Html

References · 3

• https://github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-47344 · Security Note
• https://typo3.org/security/advisory/typo3-core-sa-2026-006 · Vendor Advisory