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Servers and applications

CVE-2021-21340

Cross-Site Scripting in Content Preview (descriptionColumn)

Severity
Medium 5.4
Published
16 Mar 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
10.4.14, 11.1.1
Also known as
GHSA-fjh3-g8gq-9q92
Sources
NVD, Project advisories (GitHub)

Description

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 .

Affected software

SoftwareAffected versions
TYPO3Servers and applications · cpe:a:typo3:typo3
  • From 10.0.0 before 10.4.14
  • From 11.0.0 before 11.1.1
TYPO3Servers and applications · github:typo3/typo3
  • From 11.0.0 before 11.1.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-21340
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-21340
  • GitHub Advisory Database https://github.com/advisories/GHSA-fjh3-g8gq-9q92
  • github.com https://github.com/TYPO3/typo3/security/advisories/GHSA-fjh3-g8gq-9q92