{"id":"CVE-2020-25768","aliases":["EUVD-2020-1014","GHSA-f7wm-x4gw-6m23"],"status":"published","title":"Contao Insert tag injection in forms","description":"Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00819,"percentile":0.57664,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-74"],"published":"2020-09-24T16:23:54Z","modified":"2026-10-24T10:30:43Z","fixes":[{"ecosystem":"Packagist","package":"contao/core-bundle","fixed_in":["4.4.52","4.9.6","4.10.1"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"contao/contao","fixed_in":["4.4.52","4.9.6","4.10.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.4.52"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"fixed":"4.9.6"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/contao","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.4.52"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/contao","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"fixed":"4.9.6"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/contao","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.10.1"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.10.1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.4.52"}]}],"versions":["4.0.0","4.0.1","4.0.2","4.0.3","4.0.4","4.1.0","4.1.0-RC1","4.1.0-beta1","4.1.1","4.1.2","4.1.3","4.2.0","4.2.0-RC1","4.2.0-beta1","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.3.0","4.3.0-RC1","4.3.1","4.3.10","4.3.11","4.3.2","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.8","4.3.9","4.4.0","4.4.0-RC1","4.4.0-RC2","4.4.0-beta1","4.4.1","4.4.10","4.4.11","4.4.12","4.4.13","4.4.14","4.4.15","4.4.16","4.4.17","4.4.18","4.4.19","4.4.2","4.4.20","4.4.21","4.4.22","4.4.23","4.4.24","4.4.25","4.4.26","4.4.27","4.4.28","4.4.29","4.4.3","4.4.30","4.4.31","4.4.32","4.4.33","4.4.34","4.4.35","4.4.36","4.4.37","4.4.38","4.4.39","4.4.4","4.4.40","4.4.41","4.4.42","4.4.43","4.4.44","4.4.45","4.4.46","4.4.47","4.4.48","4.4.49","4.4.5","4.4.50","4.4.51","4.4.6","4.4.7","4.4.8","4.4.9"]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"fixed":"4.9.6"}]}],"versions":["4.5.0","4.5.1","4.5.10","4.5.11","4.5.12","4.5.13","4.5.14","4.5.2","4.5.3","4.5.4","4.5.5","4.5.6","4.5.7","4.5.8","4.5.9","4.6.0","4.6.0-RC1","4.6.0-RC2","4.6.0-RC3","4.6.1","4.6.10","4.6.11","4.6.12","4.6.13","4.6.14","4.6.2","4.6.3","4.6.4","4.6.5","4.6.6","4.6.7","4.6.8","4.6.9","4.7.0","4.7.0-RC1","4.7.0-RC2","4.7.0-RC3","4.7.0-RC4","4.7.1","4.7.2","4.7.3","4.7.4","4.7.5","4.7.6","4.7.7","4.8.0","4.8.0-RC1","4.8.0-RC2","4.8.1","4.8.2","4.8.3","4.8.4","4.8.5","4.8.6","4.8.7","4.8.8","4.9.0","4.9.0-RC1","4.9.0-RC2","4.9.1","4.9.2","4.9.3","4.9.4","4.9.5"]},{"source":"osv","ecosystem":"Packagist","package":"contao/contao","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.4.52"}]}],"versions":["4.4.22","4.4.23","4.4.24","4.4.25","4.4.26","4.4.27","4.4.28","4.4.29","4.4.30","4.4.31","4.4.32","4.4.33","4.4.34","4.4.35","4.4.36","4.4.37","4.4.38","4.4.39","4.4.40","4.4.41","4.4.42","4.4.43","4.4.44","4.4.45","4.4.46","4.4.47","4.4.48","4.4.49","4.4.50","4.4.51"]},{"source":"osv","ecosystem":"Packagist","package":"contao/contao","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.5.0"},{"fixed":"4.9.6"}]}],"versions":["4.5.13","4.5.14","4.6.0","4.6.1","4.6.10","4.6.11","4.6.12","4.6.13","4.6.14","4.6.2","4.6.3","4.6.4","4.6.5","4.6.6","4.6.7","4.6.8","4.6.9","4.7.0","4.7.0-RC1","4.7.0-RC2","4.7.0-RC3","4.7.0-RC4","4.7.1","4.7.2","4.7.3","4.7.4","4.7.5","4.7.6","4.7.7","4.8.0","4.8.0-RC1","4.8.0-RC2","4.8.1","4.8.2","4.8.3","4.8.4","4.8.5","4.8.6","4.8.7","4.8.8","4.9.0","4.9.0-RC1","4.9.0-RC2","4.9.1","4.9.2","4.9.3","4.9.4","4.9.5"]},{"source":"osv","ecosystem":"Packagist","package":"contao/contao","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.10.1"}]}],"versions":["4.10.0"]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.10.1"}]}],"versions":["4.10.0"]}],"products":[{"vendor":"contao","product":"contao"}],"references":[{"url":"https://community.contao.org/en/forumdisplay.php?4-Announcements","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","web"]},{"url":"https://contao.org/en/security-advisories/insert-tag-injection-in-forms.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/contao/contao/security/advisories/GHSA-f7wm-x4gw-6m23","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25768","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2020-25768.yaml","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2020-25768.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-f7wm-x4gw-6m23"},{"url":"https://github.com/contao/contao","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-25768","description":"Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.","status":"published","published":"2020-10-07T20:37:52Z","modified":"2024-08-04T15:40:36.95Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-1014","description":"Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.","status":"published","published":"2020-10-07T20:37:52Z","modified":"2024-08-04T15:40:36Z","updated_at":"2026-11-03T03:07:17.317062Z"}],"ghsa":[{"id":"GHSA-f7wm-x4gw-6m23","title":"Contao Insert tag injection in forms","description":"### Impact\n\nIt is possible to inject insert tags in front end forms which will be replaced when the page is rendered.\n\n### Patches\n\nUpdate to Contao 4.4.52, 4.9.6 or 4.10.1.\n\n### Workarounds\n\nDisable the front end login form and do not use form fields with array keys such as `fieldname[]`.\n\n### References\n\nhttps://contao.org/en/security-advisories/insert-tag-injection-in-forms\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).\n","status":"published","published":"2020-09-24T16:23:54Z","modified":"2024-04-22T18:42:20Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-20","CWE-74"],"updated_at":"2026-11-02T14:37:44.335614Z"}],"nvd":[{"id":"CVE-2020-25768","description":"Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.","status":"published","published":"2020-10-07T21:15:14.963Z","modified":"2026-06-17T03:07:16.357Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-74"],"updated_at":"2026-11-02T14:06:19.351389Z"}],"osv":[{"id":"CVE-2020-25768","description":"Contao before 4.4.52, 4.9.x before 4.9.6, and 4.10.x before 4.10.1 have Improper Input Validation. It is possible to inject insert tags in front end forms which will be replaced when the page is rendered.","status":"published","published":"2020-10-07T21:15:14.963Z","modified":"2026-10-24T10:30:43.405747636Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:15.879068Z"},{"id":"GHSA-f7wm-x4gw-6m23","title":"Contao Insert tag injection in forms","description":"### Impact\n\nIt is possible to inject insert tags in front end forms which will be replaced when the page is rendered.\n\n### Patches\n\nUpdate to Contao 4.4.52, 4.9.6 or 4.10.1.\n\n### Workarounds\n\nDisable the front end login form and do not use form fields with array keys such as `fieldname[]`.\n\n### References\n\nhttps://contao.org/en/security-advisories/insert-tag-injection-in-forms\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).\n","status":"published","published":"2020-09-24T16:23:54Z","modified":"2024-04-22T19:02:09.763522Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-20","CWE-74"],"updated_at":"2026-11-02T15:46:46.006631Z"}]}}