CVE-2026-43827 — Apache Shiro: Session fixation: new session is not created after login by default
Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to up…
Published: 2026-05-25 · CVSS: 5.9 · CVSS 4.0
Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In 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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7