Medium 5.1Published Jun 8, 2026

CVE-2026-47345TYPO3 HTML Sanitizer allows Cross-Site Scripting

Updated under an hour ago (Oct 27, 2026, 3:30 PM ET)

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It affects TYPO3 HTML Sanitizer. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TYPO3 HTML Sanitizer

Exploited in the last 30 days

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.

CVSS: 5.1 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: TYPO3
NVD analysis: Deferred
Record last updated: Jun 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TYPO3 HTML Sanitizer typo3:html_sanitizer (from the name)	before 2.3.2	CNA record

References

References

https://typo3.org/security/advisory/typo3-core-sa-2026-006	vendor-advisory
https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.