TYPO3/html-sanitizer <2.3.2 Namespace Attr Not Encoded XSS Bypass
CVE-2026-47345 Published on June 8, 2026
TYPO3 HTML Sanitizer allows Cross-Site Scripting
Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-47345 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-47345
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Affected Versions
TYPO3 HTML Sanitizer:- Before 2.3.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.