UpHeron
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Servers and applications

CVE-2021-21370

Cross-Site Scripting in Content Preview (CType menu)

Severity
Medium 5.4
Published
16 Mar 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1
Also known as
GHSA-x7hc-x7fm-f7qh
Sources
NVD, Project advisories (GitHub)

Description

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,…

Affected software

SoftwareAffected versions
TYPO3Servers and applications · cpe:a:typo3:typo3
  • From 7.0.0 before 7.6.51
  • From 8.0.0 before 8.7.40
  • From 9.0.0 before 9.5.25
  • 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-2021-21370
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-21370
  • GitHub Advisory Database https://github.com/advisories/GHSA-x7hc-x7fm-f7qh
  • github.com https://github.com/TYPO3/typo3/security/advisories/GHSA-x7hc-x7fm-f7qh