{"id":"CVE-2024-28234","aliases":["EUVD-2024-1227","GHSA-j55w-hjpj-825g"],"status":"published","title":"Contao has insufficient BBCode sanitizer","description":"Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00572,"percentile":0.47747,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-74"],"published":"2024-04-09T13:59:41Z","modified":"2026-10-28T02:31:09Z","fixes":[{"ecosystem":"Packagist","package":"contao/comments-bundle","fixed_in":["4.13.40","5.3.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"contao/comments-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"4.13.40"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/comments-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0-RC1"},{"fixed":"5.3.4"}]}]},{"source":"osv","ecosystem":"Packagist","package":"contao/comments-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"4.13.40"}]}],"versions":["4.0.0","4.0.0-RC1","4.0.0-beta1","4.0.1","4.0.2","4.0.3","4.1.0","4.1.0-RC1","4.1.0-beta1","4.1.1","4.1.2","4.10.0","4.10.0-RC1","4.10.0-RC2","4.10.0-RC3","4.10.0-RC4","4.10.1","4.10.2","4.10.3","4.10.4","4.10.5","4.10.6","4.10.7","4.11.0","4.11.0-RC1","4.11.0-RC2","4.11.1","4.11.2","4.11.3","4.11.4","4.11.5","4.11.6","4.11.7","4.11.8","4.11.9","4.12.0","4.12.0-RC1","4.12.0-RC2","4.12.0-RC3","4.12.1","4.12.2","4.12.3","4.12.4","4.12.5","4.12.6","4.12.7","4.13.0","4.13.0-RC1","4.13.0-RC2","4.13.0-RC3","4.13.1","4.13.10","4.13.11","4.13.12","4.13.13","4.13.14","4.13.15","4.13.16","4.13.17","4.13.18","4.13.19","4.13.2","4.13.20","4.13.21","4.13.22","4.13.23","4.13.24","4.13.25","4.13.26","4.13.27","4.13.28","4.13.29","4.13.3","4.13.30","4.13.31","4.13.32","4.13.33","4.13.34","4.13.35","4.13.36","4.13.37","4.13.38","4.13.39","4.13.4","4.13.5","4.13.6","4.13.7","4.13.8","4.13.9","4.2.0","4.2.0-RC1","4.2.0-beta1","4.2.1","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","4.4.52","4.4.53","4.4.54","4.4.55","4.4.56","4.4.57","4.4.6","4.4.7","4.4.8","4.4.9","4.5.0","4.5.0-RC1","4.5.0-RC2","4.5.0-beta1","4.5.0-beta2","4.5.0-beta3","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","4.9.10","4.9.11","4.9.12","4.9.13","4.9.14","4.9.15","4.9.16","4.9.17","4.9.18","4.9.19","4.9.2","4.9.20","4.9.21","4.9.22","4.9.23","4.9.24","4.9.25","4.9.26","4.9.27","4.9.28","4.9.29","4.9.3","4.9.30","4.9.31","4.9.32","4.9.33","4.9.34","4.9.35","4.9.36","4.9.37","4.9.38","4.9.39","4.9.4","4.9.40","4.9.41","4.9.42","4.9.5","4.9.6","4.9.7","4.9.8","4.9.9"]},{"source":"osv","ecosystem":"Packagist","package":"contao/comments-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0-RC1"},{"fixed":"5.3.4"}]}],"versions":["5.0.0","5.0.0-RC1","5.0.0-RC2","5.0.0-RC3","5.0.0-RC4","5.0.1","5.0.10","5.0.2","5.0.3","5.0.4","5.0.5","5.0.6","5.0.7","5.0.8","5.0.9","5.1.0","5.1.0-RC1","5.1.0-RC2","5.1.0-RC3","5.1.1","5.1.10","5.1.11","5.1.2","5.1.3","5.1.4","5.1.5","5.1.6","5.1.7","5.1.8","5.1.9","5.2.0","5.2.0-RC1","5.2.0-RC2","5.2.0-RC3","5.2.0-RC4","5.2.0-RC5","5.2.0-RC6","5.2.1","5.2.10","5.2.2","5.2.3","5.2.4","5.2.5","5.2.6","5.2.7","5.2.8","5.2.9","5.3.0","5.3.0-RC1","5.3.0-RC2","5.3.0-RC3","5.3.0-RC4","5.3.1","5.3.2","5.3.3"]}],"products":[{"vendor":"contao","product":"contao"}],"references":[{"url":"https://github.com/contao/contao/security/advisories/GHSA-j55w-hjpj-825g","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/contao/contao/commit/55b995d8d35da0d36bc6a22c53fe6423ab0c4ae2","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/contao/contao/commit/6d42e667177c972ae7c219645593c262d7764ce2","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://contao.org/en/security-advisories/insufficient-bbcode-sanitization","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-28234","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j55w-hjpj-825g"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/28xxx/CVE-2024-28234.json","tags":["advisory"]},{"url":"https://github.com/contao/contao","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-28234","title":"Contao has insufficient BBCode sanitizer","description":"Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.","status":"published","published":"2024-04-09T13:59:41.3Z","modified":"2024-08-02T00:48:49.568Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:34:18.951288Z"}],"euvd":[{"id":"EUVD-2024-1227","description":"Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.","status":"published","published":"2024-04-09T13:59:41Z","modified":"2024-08-02T00:48:49Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:26.752963Z"}],"ghsa":[{"id":"GHSA-j55w-hjpj-825g","title":"Contao: Insufficient BBCode sanitizer","description":"### Impact\n\nIf BBCode is enabled for comments, users can inject CSS styles.\n\n### Patches\n\nUpdate to Contao 4.13.40 or 5.3.4.\n\n### Workarounds\n\nDisable BBCode for comments.\n\n### References\n\nhttps://contao.org/en/security-advisories/insufficient-bbcode-sanitization\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).","status":"published","published":"2024-04-09T18:52:54Z","modified":"2024-04-09T18:52:55Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:37:42.744468Z"}],"nvd":[{"id":"CVE-2024-28234","description":"Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.","status":"published","published":"2024-04-09T14:15:08.897Z","modified":"2026-06-17T07:21:13.957Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:09:48.152273Z"}],"osv":[{"id":"CVE-2024-28234","title":"Contao has insufficient BBCode sanitizer","description":"Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.","status":"published","published":"2024-04-09T13:59:41.3Z","modified":"2026-10-28T02:31:09.888549066Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T15:44:39.569658Z"},{"id":"GHSA-j55w-hjpj-825g","title":"Contao: Insufficient BBCode sanitizer","description":"### Impact\n\nIf BBCode is enabled for comments, users can inject CSS styles.\n\n### Patches\n\nUpdate to Contao 4.13.40 or 5.3.4.\n\n### Workarounds\n\nDisable BBCode for comments.\n\n### References\n\nhttps://contao.org/en/security-advisories/insufficient-bbcode-sanitization\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).","status":"published","published":"2024-04-09T18:52:54Z","modified":"2026-09-10T03:50:11.402836258Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T15:46:49.977351Z"}]}}