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GHSA-fcvm-3cpj-f9qx

MediumCVSS 5.9 / 10
Published May 26, 2026·Last modified Jun 30, 2026
Affected Components(2)
Maven logoorg.apache.shiro/shiro-core
1.0.0-incubating – 2.2.0
Maven logoorg.apache.shiro/shiro-core
3.0.0-alpha-1 – 3.0.0-alpha-2
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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Risk Scores
Base Score
5.9

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.

Threat Intelligence
2.1

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2026-43827
    Alias
  • EUVD-2026-31736
    Alias

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Medium severity
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