{"id":"CVE-2016-3166","aliases":["EUVD-2022-3773","GHSA-fg5q-r2q5-qmh3"],"status":"published","title":"Drupal CRLF injection vulnerability in the drupal_set_header function","description":"CRLF injection vulnerability in the drupal_set_header function in Drupal 6.x before 6.38, when used with PHP before 5.1.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by leveraging a module that allows user-submitted data to appear in HTTP headers.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01179,"percentile":0.67873,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-113"],"published":"2016-04-12T15:00:00Z","modified":"2026-10-24T10:30:59Z","fixes":[{"ecosystem":"Packagist","package":"drupal/core","fixed_in":["6.38"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"drupal/drupal","fixed_in":["6.38"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"drupal/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0"},{"fixed":"6.38"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"drupal/drupal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0"},{"fixed":"6.38"}]}]},{"source":"osv","ecosystem":"Packagist","package":"drupal/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0"},{"fixed":"6.38"}]}]},{"source":"osv","ecosystem":"Packagist","package":"drupal/drupal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0"},{"fixed":"6.38"}]}]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"drupal","product":"drupal"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2016/02/24/19","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/03/15/10","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.debian.org/security/2016/dsa-3498","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory","web"]},{"url":"https://www.drupal.org/SA-CORE-2016-001","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-3166","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2016-3166.yaml","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2016-3166.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-fg5q-r2q5-qmh3"},{"url":"https://github.com/drupal/core","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2016-3166","description":"CRLF injection vulnerability in the drupal_set_header function in Drupal 6.x before 6.38, when used with PHP before 5.1.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by leveraging a module that allows user-submitted data to appear in HTTP headers.","status":"published","published":"2016-04-12T15:00:00Z","modified":"2024-08-05T23:47:58.184Z","updated_at":"2026-11-02T14:33:33.758954Z"}],"euvd":[{"id":"EUVD-2022-3773","description":"CRLF injection vulnerability in the drupal_set_header function in Drupal 6.x before 6.38, when used with PHP before 5.1.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by leveraging a module that allows user-submitted data to appear in HTTP headers.","status":"published","published":"2016-04-12T15:00:00Z","modified":"2024-08-05T23:47:58Z","updated_at":"2026-11-03T02:22:50.607493Z"}],"ghsa":[{"id":"GHSA-fg5q-r2q5-qmh3","title":"Drupal CRLF injection vulnerability in the drupal_set_header function","description":"CRLF injection vulnerability in the drupal_set_header function in Drupal 6.x before 6.38, when used with PHP before 5.1.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by leveraging a module that allows user-submitted data to appear in HTTP headers.","status":"published","published":"2022-05-17T03:57:20Z","modified":"2024-04-23T22:29:19Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T14:37:44.867253Z"}],"nvd":[{"id":"CVE-2016-3166","description":"CRLF injection vulnerability in the drupal_set_header function in Drupal 6.x before 6.38, when used with PHP before 5.1.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by leveraging a module that allows user-submitted data to appear in HTTP 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