{"action":"Upgrade typo3/cms-core to 9.5.28 or later.","affected":[{"fixed":"9.5.28","introduced":"9.0.0"},{"fixed":"10.4.18","introduced":"10.0.0"},{"fixed":"11.3.1","introduced":"11.0.0"}],"component":"typo3/cms-core","cve_ids":["CVE-2021-32667"],"ecosystem":"Packagist","epss":0.00603,"exploited":false,"fixed_versions":["9.5.28","10.4.18","11.3.1"],"ghsa_id":"GHSA-8mq9-fqv8-59wf","id":"tcs_01M5KEZ5VFRCP9C9BQZGRJK8JB","modified_at":"2026-07-08T06:29:29.237450795Z","published_at":"2021-07-22T19:34:43Z","references":["https://osv.dev/vulnerability/GHSA-8mq9-fqv8-59wf","https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf","https://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf","https://nvd.nist.gov/vuln/detail/CVE-2021-32667","https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.yaml","https://github.com/TYPO3/typo3","https://typo3.org/security/advisory/typo3-core-sa-2021-009"],"severity":{"label":"medium","score":6.4},"sources":[{"source":"osv","source_id":"GHSA-8mq9-fqv8-59wf","url":"https://osv.dev/vulnerability/GHSA-8mq9-fqv8-59wf"}],"summary":"Cross-Site Scripting in Page Preview"}