CVE-2023-47125: Bypassing Cross-Site Scripting Protection in TYPO3 HTML Sanitizer

November 14, 2023 (updated November 21, 2023)

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.

References

github.com/TYPO3/html-sanitizer/commit/b8f90717251d968c49dc77f8c1e5912e2fbe0dff
github.com/TYPO3/html-sanitizer/security/advisories/GHSA-mm79-jhqm-9j54
github.com/advisories/GHSA-mm79-jhqm-9j54
nvd.nist.gov/vuln/detail/CVE-2023-47125
typo3.org/security/advisory/typo3-core-sa-2023-007

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