CVE-2026-47344

EUVD-2026-35191
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
TYPO3CNA
2.1 LOW
NETWORK
LOW
LOW
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 14%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
typo3html_sanitizer
𝑥
< 2.3.2
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c
https://typo3.org/security/advisory/typo3-core-sa-2026-006