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OpenAdvisories
Medium · 4.7 Public exploit CVE-2023-47125 BIT-typo3-2023-47125EUVD-2023-3000GHSA-mm79-jhqm-9j54

By-passing Cross-Site Scripting Protection in HTML Sanitizer

Published Nov 14, 2023 · Updated Aug 29, 2024 · Assigned by GitHub_M

Vendor: TYPO3 Product: HTML Sanitizer Package: typo3/html-sanitizer Ecosystem: Packagist

Description

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions DOM processing instructions are not handled correctly. This allows bypassing the cross-site scripting mechanism of typo3/html-sanitizer. This vulnerability has been addressed in versions 1.5.3 and 2.1.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

VendorProductAffectedFixed
TYPO3 html-sanitizer >= 1.0.0, < 1.5.3, >= 2.0.0, < 2.1.4 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • nikn0laty/TYPO3-HTML-Sanitizer-XSS-CVE-2023-47125 ★ 0 · Jan 23, 2026

    Stored XSS (exploit) in TYPO3 HTML Sanitizer (CVE-2023-47125). DOM processing instructions are not handled correctly. This allows bypassing the cross-site scripting mechanism of typo3/html-sanitizer.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist typo3/html-sanitizer >= 1.0.0, < 1.5.3 1.5.3 GHSA-mm79-jhqm-9j54
Packagist typo3/html-sanitizer >= 2.0.0, < 2.1.4 2.1.4 GHSA-mm79-jhqm-9j54

Advisories 1

References