{"id":"CVE-2026-43827","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-43827","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.","published":"2026-05-26T13:30:50Z","modified":"2026-06-30T17:32:40.600742507Z","cvss":null,"epss":{"score":0.00412,"percentile":0.34378,"asOf":"2026-08-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.shiro:shiro-core","fixedVersion":"2.2.0"},{"ecosystem":"Maven","name":"org.apache.shiro:shiro-core","fixedVersion":"3.0.0-alpha-2"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-06-30T17:32:40.600742507Z"}}