CVE-2021-32768

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions failing to properly parse, sanitize and encode malicious rich-text content, the content rendering process in the website frontend is vulnerable to cross-site scripting. Corresponding rendering instructions via TypoScript functionality HTMLparser does not consider all potentially malicious HTML tag & attribute combinations per default. In default scenarios, a valid backend user account is needed to exploit this vulnerability. In case custom plugins used in the website frontend accept and reflect rich-text content submitted by users, no authentication is required. Update to TYPO3 versions 7.6.53 ELTS, 8.7.42 ELTS, 9.5.29, 10.4.19, 11.3.2 that fix the problem described.

• CWE-79
• CWE-79

• https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727vThird Party Advisory
• https://typo3.org/security/advisory/typo3-core-sa-2021-013Vendor Advisory
• https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727vThird Party Advisory
• https://typo3.org/security/advisory/typo3-core-sa-2021-013Vendor Advisory

Published

Aug 10, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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