In short
- CVE-2026-43827 is a MEDIUM (CVSS 6.5) vulnerability affecting org.apache.shiro:shiro-core, shiro (apache).
- Chance of exploitation in the next 30 days (EPSS): 0.41%, higher than 35.5% of all vulnerabilities.
- Fix: update to 2.2.0, 3.0.0-alpha-2, 2.1.1 or later.
| Package | Affected versions | Patched versions |
|---|
| org.apache.shiro:shiro-core Maven | ≥ 1.0.0-incubating, < 2.2.0≥ 3.0.0-alpha-1, < 3.0.0-alpha-2
| 2.2.03.0.0-alpha-2
|
| shiro | = 3.0.0< 2.1.1
| 2.1.1
|
Description
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.
NVD description
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.
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