CVE-2026-43827

CVE-2026-43827 affects Apache Shiro. In affected versions (1.0–2.1.0 and 3.0.0-alpha-1), an existing session is not invalidated nor a new session with a new ID issued after login, enabling session fixation. Upgraded fixes are available in 2.1.1 and 3.0.0-alpha-2 or later; apply the patch to mitig...

CVE-2026-43827: Session Fixation

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...