medium6.5
CVE-2026-43827
Default configurations of Apache Shiro have a session fixation vulnerability.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.apache.shiro:shiro-core | >= 1.0.0-incubating, < 2.2.0 | 2.2.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Shiro | before 2.1.1 Version 3.0.0 |