{"id":"GHSA-wvj5-r78r-hhfq","aliases":["CVE-2016-2403"],"title":"Symfony Authentication Bypass","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"CRITICAL","description":"Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.","severity":"critical","score":9.8,"published":"2022-05-14T03:10:21.000Z","modified":"2024-02-16T08:21:27.176Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"symfony/security-core","sources":[{"name":"OSV · GHSA-wvj5-r78r-hhfq","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"ranges":[{"events":[{"introduced":"2.8.0"},{"fixed":"2.8.6"}],"type":"ECOSYSTEM"}],"versions":["v2.8.0","v2.8.1","v2.8.2","v2.8.3","v2.8.4","v2.8.5"],"fixed":["2.8.6"]},{"ecosystem":"Packagist","name":"symfony/security-core","sources":[{"name":"OSV · GHSA-wvj5-r78r-hhfq","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.0.6"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5"],"fixed":["3.0.6"]},{"ecosystem":"Packagist","name":"symfony/security","sources":[{"name":"OSV · GHSA-wvj5-r78r-hhfq","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"ranges":[{"events":[{"introduced":"2.8.0"},{"fixed":"2.8.6"}],"type":"ECOSYSTEM"}],"versions":["v2.8.0","v2.8.1","v2.8.2","v2.8.3","v2.8.4","v2.8.5"],"fixed":["2.8.6"]},{"ecosystem":"Packagist","name":"symfony/security","sources":[{"name":"OSV · GHSA-wvj5-r78r-hhfq","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.0.6"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5"],"fixed":["3.0.6"]},{"ecosystem":"Packagist","name":"symfony/symfony","sources":[{"name":"OSV · GHSA-wvj5-r78r-hhfq","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"ranges":[{"events":[{"introduced":"2.8.0"},{"fixed":"2.8.6"}],"type":"ECOSYSTEM"}],"versions":["v2.8.0","v2.8.1","v2.8.2","v2.8.3","v2.8.4","v2.8.5"],"fixed":["2.8.6"]},{"ecosystem":"Packagist","name":"symfony/symfony","sources":[{"name":"OSV · GHSA-wvj5-r78r-hhfq","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.0.6"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5"],"fixed":["3.0.6"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2016-2403","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2016-2403.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-2403.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-2403.yaml","https://symfony.com/cve-2016-2403","https://web.archive.org/web/20210123224944/http://www.securityfocus.com/bid/96137","https://www.debian.org/security/2018/dsa-4262","http://symfony.com/blog/cve-2016-2403-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password"],"sources":[{"name":"OSV","id":"GHSA-wvj5-r78r-hhfq","modified":"2024-02-16T08:21:27.176274Z","url":"https://osv.dev/vulnerability/GHSA-wvj5-r78r-hhfq"}],"assessments":[{"source":"OSV","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T04:25:31.760Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}