{"id":"CVE-2018-12071","aliases":["GHSA-g434-3q2j-hj4r"],"url":"https://o3.security/vulnerability/CVE-2018-12071","summary":"CodeIgniter Session Fixation Vulnerability","details":"A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.","published":"2018-06-17T20:29:00.540Z","modified":"2026-07-08T05:50:54.101081042Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.01504,"percentile":0.71896,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"codeigniter/framework","fixedVersion":"3.1.10"}],"fix":{"url":"https://github.com/bcit-ci/CodeIgniter/commit/800a20d6c4662d99ae0988b2f8f2238bb8bb29db","label":"bcit-ci/CodeIgniter@800a20d"},"references":[{"type":"ADVISORY","url":"https://www.codeigniter.com/user_guide/changelog.html"},{"type":"FIX","url":"https://github.com/bcit-ci/CodeIgniter/commit/800a20d6c4662d99ae0988b2f8f2238bb8bb29db"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12071"},{"type":"WEB","url":"https://github.com/bcit-ci/CodeIgniter/issues/5958"},{"type":"WEB","url":"https://github.com/bcit-ci/CodeIgniter/commit/a9da3dd2f16a8f97d7bc4ff5572b28e4bb84c813#diff-32788a4d3748e8818044886ab43241179c7f5f5b82e979e73146669ca6e2da1cR306"},{"type":"PACKAGE","url":"https://github.com/bcit-ci/CodeIgniter"},{"type":"WEB","url":"https://web.archive.org/web/20181115214804/https://www.codeigniter.com/user_guide/changelog.html#version-3-1-9"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:50:54.101081042Z"}}