{"id":"CVE-2024-28235","aliases":["EUVD-2024-1172","GHSA-9jh5-qf84-x6pr"],"status":"published","title":"Contao possible cookie sharing with external domains while checking protected pages for broken links","description":"Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed  options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00708,"percentile":0.53951,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2024-04-09T15:50:56Z","modified":"2026-11-11T10:31:02Z","fixes":[{"ecosystem":"Packagist","package":"contao/core-bundle","fixed_in":["4.13.40","5.3.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.9.0"},{"fixed":"4.13.40"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0-RC1"},{"fixed":"5.3.4"}]}]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.9.0"},{"fixed":"4.13.40"}]}],"versions":["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","4.9.0","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/core-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-9jh5-qf84-x6pr","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/contao/contao/commit/73a2770e2d3535ec9f1b03d54be00e56ebb8ff16","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/contao/contao/commit/79b7620d01ce8f46ce2b331455e0d95e5208de3d","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/contao/contao/blob/14e9ef4bc8b82936ba2d0e04164581145a075e2a/core-bundle/src/Resources/contao/classes/Crawl.php#L129","tags":["x_refsource_MISC","x_transferred","Product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-28235","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9jh5-qf84-x6pr"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/28xxx/CVE-2024-28235.json","tags":["advisory"]},{"url":"https://github.com/contao/contao","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-28235","title":"Contao possible cookie sharing with external domains while checking protected pages for broken links","description":"Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed  options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.","status":"published","published":"2024-04-09T15:50:56.531Z","modified":"2024-08-02T00:48:49.584Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:34:18.597034Z"}],"euvd":[{"id":"EUVD-2024-1172","description":"Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed  options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.","status":"published","published":"2024-04-09T15:50:56Z","modified":"2024-08-02T00:48:49Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:26.752963Z"}],"ghsa":[{"id":"GHSA-9jh5-qf84-x6pr","title":"Contao: Possible cookie sharing with external domains while checking protected pages for broken links","description":"### Impact\n\nIf the crawler is set to crawl protected pages, it sends the cookie header to externals URLs.\n\n### Patches\n\nUpdate to Contao 4.13.40 or 5.3.4.\n\n### Workarounds\n\nDisable crawling protected pages.\n\n### References\n\nhttps://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler\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":"2024-04-09T15:50:59Z","modified":"2024-04-09T21:00:47Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:37:42.744468Z"}],"nvd":[{"id":"CVE-2024-28235","description":"Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed  options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.","status":"published","published":"2024-04-09T16:15:07.863Z","modified":"2026-06-17T07:21:14.08Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:09:48.152273Z"}],"osv":[{"id":"CVE-2024-28235","title":"Contao possible cookie sharing with external domains while checking protected pages for broken links","description":"Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed  options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.","status":"published","published":"2024-04-09T15:50:56.531Z","modified":"2026-11-11T10:31:02.052573429Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-11T11:06:28.337192Z"},{"id":"GHSA-9jh5-qf84-x6pr","title":"Contao: Possible cookie sharing with external domains while checking protected pages for broken links","description":"### Impact\n\nIf the crawler is set to crawl protected pages, it sends the cookie header to externals URLs.\n\n### Patches\n\nUpdate to Contao 4.13.40 or 5.3.4.\n\n### Workarounds\n\nDisable crawling protected pages.\n\n### References\n\nhttps://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler\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":"2024-04-09T15:50:59Z","modified":"2026-09-10T03:50:00.305256269Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:46:43.875515Z"}]}}