CVE-2026-43827

medium Apache
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS Score
0.4%
Exploitation probability in 30 days
Top 66% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Published: May 25, 2026 (104 days ago)
Last Modified: July 24, 2026
Vendor: Apache
Source: 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.

CWE

CWE-384

Affected Products

apache shiro

References

🔗 shiro.apache.org 🔗 www.openwall.com