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CVE-2026-43827 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/05/25/6	CVE	Mailing ListThird Party Advisory
https://shiro.apache.org/security-reports.html#cve_2026_43827	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-384	Session Fixation	[email protected]

Affected Products

Product	Versions
apache shiro	< 2.1.1 3.0.0 alpha1
CPE cpe:2.3:a:apache:shiro:::::::: cpe:2.3:a:apache:shiro:3.0.0:alpha1:::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jul 24, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
May 28, 2026	Initial Analysis	[email protected]
May 25, 2026	CVE Modified	CVE
May 25, 2026	New CVE Received	[email protected]