{"id":"CVE-2018-11385","aliases":["GHSA-g4rg-rw65-8hfg"],"url":"https://o3.security/vulnerability/CVE-2018-11385","summary":"Symfony Session Fixation Vulnerability","details":"An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. A session fixation vulnerability within the \"Guard\" login feature may allow an attacker to impersonate a victim towards the web application if the session id value was previously known to the attacker.","published":"2018-06-13T16:29:00.437Z","modified":"2026-08-07T11:48:09.598994830Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"2.7.48"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"2.8.41"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"3.3.17"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"3.4.11"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"4.0.11"},{"ecosystem":"Packagist","name":"symfony/security-http","fixedVersion":"2.7.48"},{"ecosystem":"Packagist","name":"symfony/security-http","fixedVersion":"2.8.41"},{"ecosystem":"Packagist","name":"symfony/security-http","fixedVersion":"3.3.17"},{"ecosystem":"Packagist","name":"symfony/security-http","fixedVersion":"3.4.11"},{"ecosystem":"Packagist","name":"symfony/security-http","fixedVersion":"4.0.11"},{"ecosystem":"Packagist","name":"symfony/security","fixedVersion":"2.7.48"},{"ecosystem":"Packagist","name":"symfony/security","fixedVersion":"2.8.41"},{"ecosystem":"Packagist","name":"symfony/security","fixedVersion":"3.3.17"},{"ecosystem":"Packagist","name":"symfony/security","fixedVersion":"3.4.11"},{"ecosystem":"Packagist","name":"symfony/security","fixedVersion":"4.0.11"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html"},{"type":"ADVISORY","url":"https://symfony.com/blog/cve-2018-11385-session-fixation-issue-for-guard-authentication"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4262"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:09.598994830Z"}}