Low severity · published Jun 8, 2026
CVE-2026-47344
TYPO3 HTML Sanitizer allows Cross-Site Scripting
2.1
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTML Sanitizer · TYPO3
before 2.3.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47344
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47344
github.com
https://github.com/TYPO3/html-sanitizer/commit/bd1a88d9b5a5f67f1120ec41084e9c1a0675641c
typo3.org
https://typo3.org/security/advisory/typo3-core-sa-2026-006
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