GoogleOSV:GHSA-X7HC-X7FM-F7QHCross-Site Scripting in Content Preview (CType menu)
0.001 Low
EPSS
Percentile
26.4%
Problem
It has been discovered that content elements of type menu are vulnerable to cross-site scripting when their referenced items get previewed in the page module. A valid backend user account is needed to exploit this vulnerability.
Solution
Update to TYPO3 versions 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 that fix the problem described.
Credits
Thanks to TYPO3 contributor Oliver Bartsch who reported and fixed the issue.
References
References
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21370.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21370.yaml
github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x7hc-x7fm-f7qh
nvd.nist.gov/vuln/detail/CVE-2021-21370
packagist.org/packages/typo3/cms-backend
typo3.org/security/advisory/typo3-core-sa-2021-008
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