{"id":"GHSA-fcvm-3cpj-f9qx","summary":"Apache Shiro has a session fixation vulnerability","details":"Default configurations of Apache Shiro have a session fixation vulnerability.\n\nThis issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1.\n\nUsers are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue.\n\nIn the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.","aliases":["CVE-2026-43827"],"modified":"2026-06-30T17:41:30.825304Z","published":"2026-05-26T13:30:50Z","database_specific":{"nvd_published_at":"2026-05-25T21:16:34Z","cwe_ids":["CWE-384"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-06-30T17:26:23Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43827"},{"type":"PACKAGE","url":"https://github.com/apache/shiro"},{"type":"WEB","url":"https://shiro.apache.org/security-reports.html#cve_2026_43827"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/25/6"}],"affected":[{"package":{"name":"org.apache.shiro:shiro-core","ecosystem":"Maven","purl":"pkg:maven/org.apache.shiro/shiro-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0-incubating"},{"fixed":"2.2.0"}]}],"versions":["1.0.0-incubating","1.1.0","1.10.0","1.10.1","1.11.0","1.12.0","1.13.0","1.2.0","1.2.1","1.2.2","1.2.3","1.2.4","1.2.5","1.2.6","1.3.0","1.3.1","1.3.2","1.4.0","1.4.0-RC2","1.4.1","1.4.2","1.5.0","1.5.1","1.5.2","1.5.3","1.6.0","1.7.0","1.7.1","1.8.0","1.9.0","1.9.1","2.0.0","2.0.0-alpha-1","2.0.0-alpha-2","2.0.0-alpha-3","2.0.0-alpha-4","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.1.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-fcvm-3cpj-f9qx/GHSA-fcvm-3cpj-f9qx.json"}},{"package":{"name":"org.apache.shiro:shiro-core","ecosystem":"Maven","purl":"pkg:maven/org.apache.shiro/shiro-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0-alpha-1"},{"fixed":"3.0.0-alpha-2"}]}],"versions":["3.0.0-alpha-1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-fcvm-3cpj-f9qx/GHSA-fcvm-3cpj-f9qx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/RE:L/U:Amber"}]}