{"id":"CVE-2021-21340","details":"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 .","aliases":["BIT-typo3-2021-21340","GHSA-fjh3-g8gq-9q92"],"modified":"2026-04-12T01:01:15.900536Z","published":"2021-03-23T02:15:12.533Z","related":["GHSA-fjh3-g8gq-9q92"],"references":[{"type":"ADVISORY","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-fjh3-g8gq-9q92"},{"type":"ADVISORY","url":"https://packagist.org/packages/typo3/cms-backend"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2021-007"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/TYPO3/typo3","events":[{"introduced":"c91b70e450c52d29ffb08115fffbb7832b15a330"},{"fixed":"9f8b73eb73f0f9834979641c02708dc168e36eda"},{"introduced":"6a5e2d4097ef0a0e3ea955af93cf83810d6fa234"},{"fixed":"67471a2b5bf30acc0225fa0860e882c056c60547"}],"database_specific":{"cpe":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"10.0.0"},{"fixed":"10.4.14"},{"introduced":"11.0.0"},{"fixed":"11.1.1"}],"source":"CPE_FIELD"}}],"versions":["v10.0.0","v10.1.0","v10.2.0","v10.3.0","v10.4.0","v10.4.1","v10.4.10","v10.4.11","v10.4.12","v10.4.13","v10.4.2","v10.4.3","v10.4.4","v10.4.5","v10.4.6","v10.4.7","v10.4.8","v10.4.9","v11.0.0","v11.1.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21340.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}