CVE-2021-21370: Cross-site Scripting

March 23, 2021 (updated March 26, 2021)

TYPO3 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

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