{"id":"CVE-2016-3166","aliases":["GHSA-fg5q-r2q5-qmh3"],"url":"https://o3.security/vulnerability/CVE-2016-3166","summary":"Drupal CRLF injection vulnerability in the drupal_set_header function","details":"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.","published":"2016-04-12T15:59:04.027Z","modified":"2026-10-24T10:30:59.073438978Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.01179,"percentile":0.6527,"asOf":"2026-08-22"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"drupal/core","fixedVersion":"6.38"},{"ecosystem":"Packagist","name":"drupal/drupal","fixedVersion":"6.38"}],"fix":null,"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2016/02/24/19"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2016/03/15/10"},{"type":"ADVISORY","url":"http://www.debian.org/security/2016/dsa-3498"},{"type":"FIX","url":"https://www.drupal.org/SA-CORE-2016-001"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-3166"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2016-3166.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2016-3166.yaml"},{"type":"PACKAGE","url":"https://github.com/drupal/core"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:59.073438978Z"}}