CVE-2021-21340
MEDIUMTYPO3 10.0.0-10.4.13 - Authenticated Stored Cross-Site Scripting in Description Column Preview
Title source: llmDescription
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 10.4.14, 11.1.1 it has been discovered that database fields used as _descriptionColumn_ are vulnerable to cross-site scripting when their content gets previewed. A valid backend user account is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1 .
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-fjh3-g8gq-9q92
Release Notes, Third Party Advisory x_refsource_misc
https://packagist.org/packages/typo3/cms-backend
Vendor Advisory x_refsource_misc
https://typo3.org/security/advisory/typo3-core-sa-2021-007
Scores
CVSS v3
5.4
EPSS
0.0038
EPSS Percentile
59.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-79
Status
published
Products (4)
typo3/cms
10.0.0 - 10.4.14Packagist
typo3/cms-backend
10.0.0 - 10.4.14Packagist
typo3/cms-core
10.0.0 - 10.4.14Packagist
typo3/typo3
10.0.0 - 10.4.14
Published
Mar 23, 2021
Tracked Since
Feb 18, 2026