{"id":"CVE-2021-21370","details":"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, 8.7.40, 9.5.25, 10.4.14, 11.1.1.","aliases":["BIT-typo3-2021-21370","GHSA-x7hc-x7fm-f7qh"],"modified":"2026-08-27T03:49:17.873858487Z","published":"2021-03-23T02:15:12.987Z","database_specific":{"unresolved_ranges":[{"vendor_product":"typo3:typo3","cpes":["cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.0.0"},{"fixed":"7.6.51"},{"introduced":"7.0.0"},{"fixed":"7.6.51"},{"introduced":"7.0.0"},{"fixed":"7.6.51"},{"introduced":"8.0.0"},{"fixed":"8.7.40"},{"introduced":"8.0.0"},{"fixed":"8.7.40"},{"introduced":"8.0.0"},{"fixed":"8.7.40"}],"source":"CPE_RANGE"}]},"references":[{"type":"ADVISORY","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x7hc-x7fm-f7qh"},{"type":"ADVISORY","url":"https://packagist.org/packages/typo3/cms-backend"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2021-008"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/TYPO3/typo3","events":[{"introduced":"41235ff8e38c6f3401df03ae8beddd62d662c525"},{"fixed":"98b19b1727f002a9d20359f7c341c7981086989f"},{"introduced":"c91b70e450c52d29ffb08115fffbb7832b15a330"},{"fixed":"9f8b73eb73f0f9834979641c02708dc168e36eda"},{"introduced":"6a5e2d4097ef0a0e3ea955af93cf83810d6fa234"},{"fixed":"67471a2b5bf30acc0225fa0860e882c056c60547"}],"database_specific":{"cpe":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"9.0.0"},{"fixed":"9.5.25"},{"introduced":"10.0.0"},{"fixed":"10.4.14"},{"introduced":"11.0.0"},{"fixed":"11.1.1"}],"source":"CPE_RANGE"}}],"versions":["v11.1.0","v10.4.13","v11.0.0","v10.4.12","v10.4.11","v9.5.24","v10.4.10","v9.5.23","v10.4.9","v9.5.22","v10.4.8","v10.4.7","v9.5.21","v10.4.6","v9.5.20","v10.4.5","v10.4.4","v9.5.19","v10.4.3","v9.5.18","v9.5.17","v10.4.2","v10.4.1","v9.5.16","v10.4.0","v9.5.15","v10.3.0","v9.5.14","v9.5.13","v9.5.12","v10.2.0","v9.5.11","v9.5.10","v10.1.0","v9.5.9","v10.0.0","v9.5.8","v9.5.7","v9.5.6","v9.5.5","v9.5.4","v9.5.3","v9.5.2","v9.5.1","v9.5.0","v9.4.0","v9.3.0","v9.2.0","v9.1.0","v9.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21370.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/typo3/typo3","events":[{"introduced":"41235ff8e38c6f3401df03ae8beddd62d662c525"},{"fixed":"98b19b1727f002a9d20359f7c341c7981086989f"},{"introduced":"c91b70e450c52d29ffb08115fffbb7832b15a330"},{"fixed":"9f8b73eb73f0f9834979641c02708dc168e36eda"},{"introduced":"6a5e2d4097ef0a0e3ea955af93cf83810d6fa234"},{"fixed":"67471a2b5bf30acc0225fa0860e882c056c60547"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"9.0.0"},{"fixed":"9.5.25"},{"introduced":"10.0.0"},{"fixed":"10.4.14"},{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}}],"versions":["v11.1.0","v10.4.13","v11.0.0","v10.4.12","v10.4.11","v9.5.24","v10.4.10","v9.5.23","v10.4.9","v9.5.22","v10.4.8","v10.4.7","v9.5.21","v10.4.6","v9.5.20","v10.4.5","v10.4.4","v9.5.19","v10.4.3","v9.5.18","v9.5.17","v10.4.2","v10.4.1","v9.5.16","v10.4.0","v9.5.15","v10.3.0","v9.5.14","v9.5.13","v9.5.12","v10.2.0","v9.5.11","v9.5.10","v10.1.0","v9.5.9","v10.0.0","v9.5.8","v9.5.7","v9.5.6","v9.5.5","v9.5.4","v9.5.3","v9.5.2","v9.5.1","v9.5.0","v9.4.0","v9.3.0","v9.2.0","v9.1.0","v9.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21370.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}