CVE-2021-21370
MEDIUMTypo3 < 7.6.51 - XSS
Title source: ruleDescription
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.
Scores
CVSS v3
5.4
EPSS
0.0034
EPSS Percentile
56.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Classification
CWE
CWE-79
Status
published
Affected Products (4)
typo3/typo3
< 7.6.51
typo3/cms-backend
< 7.6.51Packagist
typo3/cms-core
< 10.4.14Packagist
typo3/cms
< 10.4.14Packagist
Timeline
Published
Mar 23, 2021
Tracked Since
Feb 18, 2026