{"id":"CVE-2021-21358","aliases":["BIT-typo3-2021-21358","EUVD-2021-0722","GHSA-x79j-wgqv-g8h2"],"status":"published","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form","description":"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 the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00872,"percentile":0.59293,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-03-23T01:50:16Z","modified":"2026-10-24T10:47:52Z","fixes":[{"ecosystem":"Packagist","package":"typo3/cms-form","fixed_in":["10.4.14","11.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"typo3/cms-core","fixed_in":["10.4.14","11.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"typo3/cms","fixed_in":["10.4.14","11.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"typo3","fixed_in":["10.4.14","11.1.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"typo3/cms-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.2.0"},{"last_affected":"10.4.13"},{"fixed":"10.4.14"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"typo3/cms-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"last_affected":"11.1.0"},{"fixed":"11.1.1"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"typo3/cms-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0"},{"fixed":"10.4.14"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"typo3/cms-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"typo3/cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0"},{"fixed":"10.4.14"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"typo3/cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"typo3","ranges":[{"type":"SEMVER","events":[{"introduced":"10.2.0"},{"fixed":"10.4.14"},{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"typo3/cms-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.2.0"},{"fixed":"10.4.14"}]}],"versions":["v10.2.0","v10.2.1","v10.2.2","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"]},{"source":"osv","ecosystem":"Packagist","package":"typo3/cms-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}],"versions":["v11.0.0","v11.1.0"]},{"source":"osv","ecosystem":"Packagist","package":"typo3/cms-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0"},{"fixed":"10.4.14"}]}],"versions":["v10.0.0","v10.1.0","v10.2.0","v10.2.1","v10.2.2","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"]},{"source":"osv","ecosystem":"Packagist","package":"typo3/cms-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}],"versions":["v11.0.0","v11.1.0"]},{"source":"osv","ecosystem":"Packagist","package":"typo3/cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0"},{"fixed":"10.4.14"}]}],"versions":["v10.0.0","v10.1.0","v10.2.0","v10.2.1","v10.2.2","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"]},{"source":"osv","ecosystem":"Packagist","package":"typo3/cms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.1.1"}]}],"versions":["v11.0.0","v11.1.0"]}],"products":[{"vendor":"typo3","product":"typo3"},{"vendor":"typo3","product":"typo3.cms"}],"references":[{"url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-x79j-wgqv-g8h2","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://packagist.org/packages/typo3/cms-form","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","web","advisory"]},{"url":"https://typo3.org/security/advisory/typo3-core-sa-2021-004","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21358","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21358.yaml","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21358.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-x79j-wgqv-g8h2"}],"sources":{"cve":[{"id":"CVE-2021-21358","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form","description":"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 the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.","status":"published","published":"2021-03-23T01:50:16Z","modified":"2024-08-03T18:09:15.902Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-0722","description":"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 the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.","status":"published","published":"2021-03-23T01:50:16Z","modified":"2024-08-03T18:09:15Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:25:06.913643Z"}],"ghsa":[{"id":"GHSA-x79j-wgqv-g8h2","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form","description":"\n### Problem\nIt has been discovered that the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability.\n\n### Solution\nUpdate to TYPO3 versions 10.4.14 or 11.1.1 that fix the problem described.\n\n### Credits\nThanks to Richie Lee who reported this issue and to TYPO3 framework merger Andreas Fernandez who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2021-004](https://typo3.org/security/advisory/typo3-core-sa-2021-004)","status":"published","published":"2021-03-23T01:54:06Z","modified":"2024-02-02T16:46:33Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:34.405364Z"}],"nvd":[{"id":"CVE-2021-21358","description":"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 the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.","status":"published","published":"2021-03-23T02:15:12.813Z","modified":"2026-06-17T03:35:23.023Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:50.805771Z"}],"osv":[{"id":"CVE-2021-21358","description":"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 the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.","status":"published","published":"2021-03-23T02:15:12.813Z","modified":"2026-10-24T10:47:52.608138321Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.004149Z"},{"id":"GHSA-x79j-wgqv-g8h2","title":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form","description":"\n### Problem\nIt has been discovered that the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability.\n\n### Solution\nUpdate to TYPO3 versions 10.4.14 or 11.1.1 that fix the problem described.\n\n### Credits\nThanks to Richie Lee who reported this issue and to TYPO3 framework merger Andreas Fernandez who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2021-004](https://typo3.org/security/advisory/typo3-core-sa-2021-004)","status":"published","published":"2021-03-23T01:54:06Z","modified":"2026-07-08T06:29:07.138120904Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:59.484835Z"},{"id":"BIT-typo3-2021-21358","description":"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 the Form Designer backend module of the Form Framework is vulnerable to cross-site scripting. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 10.4.14, 11.1.1.","status":"published","published":"2024-03-06T11:11:04.002Z","modified":"2024-03-06T11:25:28.861Z","updated_at":"2026-11-02T15:28:36.104787Z"}]}}