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  5. CVE-2021-21370

CVE-2021-21370: Cross-site Scripting

March 23, 2021 (updated March 26, 2021)

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.

References

  • nvd.nist.gov/vuln/detail/CVE-2021-21370
  • typo3.org/security/advisory/typo3-core-sa-2021-008

Code Behaviors & Features

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Affected versions

All versions starting from 7.0.0 before 7.6.51, all versions starting from 8.0.0 before 8.7.40, all versions starting from 9.0.0 before 9.5.25, all versions starting from 10.0.0 before 10.4.14, all versions starting from 11.0.0 before 11.1.1

Fixed versions

  • 7.6.51
  • 8.7.40
  • 9.5.25
  • 10.4.14
  • 11.1.1

Solution

Upgrade to versions 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 or above.

Impact 5.4 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/typo3/cms/CVE-2021-21370.yml

Spotted a mistake? Edit the file on GitLab.

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