CVE-2026-47345

TYPO3 HTML Sanitizer allows Cross-Site Scripting

Published: Jun 8, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-79

N/ACVSS

NVD MITRE

Description

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.

No summary for this CVE yet.

Weaknesses

CWE-79

Affected Products

TYPO3

oss-project·DEaka typo3cms, typo3 cms

HTML Sanitizer

Web & CMS Plugins

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764

github.com

https://typo3.org/security/advisory/typo3-core-sa-2026-006

typo3.org

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