CVE-2021-32669

Description

TYPO3 is an open source PHP based web content management system. Versions 9.0.0 through 9.5.28, 10.0.0 through 10.4.17, and 11.0.0 through 11.3.0 have a cross-site scripting vulnerability. When settings for _backend layouts_ are not properly encoded, the corresponding grid view is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. TYPO3 versions 9.5.29, 10.4.18, 11.3.1 contain a patch for this vulnerability.

How to fix CVE-2021-32669

To remediate CVE-2021-32669, upgrade the affected package to a fixed version below.

• —upgrade to 8.7.40 or later
• —upgrade to 10.4.18 or later
• —upgrade to 8.7.41 or later

Is CVE-2021-32669 being exploited?

Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• >= 8.0.0, < 8.7.40, >= 9.0.0, < 9.5.28, >= 10.0.0, < 10.4.17, >= 11.0.0, < 11.3.0
• >= 10.0.0, < 10.4.18
• >= 8.0.0, < 8.7.41

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-32669
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32669.yaml
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32669.yaml
• WEBgithub.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-rgcg-28xm-8mmw