CVE-2021-21370

Cross-Site Scripting in Content Preview (CType menu)

CVSS 5.4 MEDIUMEPSS 0.9%CWE-79

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 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. This is fixed in versions 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

TYPO3 · TYPO3.CMS

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References

https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x7hc-x7fm-f7qh https://packagist.org/packages/typo3/cms-backend https://typo3.org/security/advisory/typo3-core-sa-2021-008