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Vulnerability Details CVE-2026-43827

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 20.9%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-43827
  • Apache » Shiro » Version: N/A
    cpe:2.3:a:apache:shiro:-
  • Apache » Shiro » Version: 1.1.0
    cpe:2.3:a:apache:shiro:1.1.0
  • Apache » Shiro » Version: 1.10.0
    cpe:2.3:a:apache:shiro:1.10.0
  • Apache » Shiro » Version: 1.10.1
    cpe:2.3:a:apache:shiro:1.10.1
  • Apache » Shiro » Version: 1.11.0
    cpe:2.3:a:apache:shiro:1.11.0
  • Apache » Shiro » Version: 1.12.0
    cpe:2.3:a:apache:shiro:1.12.0
  • Apache » Shiro » Version: 1.13.0
    cpe:2.3:a:apache:shiro:1.13.0
  • Apache » Shiro » Version: 1.2.0
    cpe:2.3:a:apache:shiro:1.2.0
  • Apache » Shiro » Version: 1.2.1
    cpe:2.3:a:apache:shiro:1.2.1
  • Apache » Shiro » Version: 1.2.2
    cpe:2.3:a:apache:shiro:1.2.2
  • Apache » Shiro » Version: 1.2.3
    cpe:2.3:a:apache:shiro:1.2.3
  • Apache » Shiro » Version: 1.2.4
    cpe:2.3:a:apache:shiro:1.2.4
  • Apache » Shiro » Version: 1.2.5
    cpe:2.3:a:apache:shiro:1.2.5
  • Apache » Shiro » Version: 1.2.6
    cpe:2.3:a:apache:shiro:1.2.6
  • Apache » Shiro » Version: 1.3.0
    cpe:2.3:a:apache:shiro:1.3.0
  • Apache » Shiro » Version: 1.3.1
    cpe:2.3:a:apache:shiro:1.3.1
  • Apache » Shiro » Version: 1.3.2
    cpe:2.3:a:apache:shiro:1.3.2
  • Apache » Shiro » Version: 1.4.0
    cpe:2.3:a:apache:shiro:1.4.0
  • Apache » Shiro » Version: 1.4.1
    cpe:2.3:a:apache:shiro:1.4.1
  • Apache » Shiro » Version: 1.4.2
    cpe:2.3:a:apache:shiro:1.4.2
  • Apache » Shiro » Version: 1.5.0
    cpe:2.3:a:apache:shiro:1.5.0
  • Apache » Shiro » Version: 1.5.1
    cpe:2.3:a:apache:shiro:1.5.1
  • Apache » Shiro » Version: 1.5.2
    cpe:2.3:a:apache:shiro:1.5.2
  • Apache » Shiro » Version: 1.5.3
    cpe:2.3:a:apache:shiro:1.5.3
  • Apache » Shiro » Version: 1.6.0
    cpe:2.3:a:apache:shiro:1.6.0
  • Apache » Shiro » Version: 1.7.0
    cpe:2.3:a:apache:shiro:1.7.0
  • Apache » Shiro » Version: 1.7.1
    cpe:2.3:a:apache:shiro:1.7.1
  • Apache » Shiro » Version: 1.8.0
    cpe:2.3:a:apache:shiro:1.8.0
  • Apache » Shiro » Version: 1.9.0
    cpe:2.3:a:apache:shiro:1.9.0
  • Apache » Shiro » Version: 1.9.1
    cpe:2.3:a:apache:shiro:1.9.1
  • Apache » Shiro » Version: 2.0.0
    cpe:2.3:a:apache:shiro:2.0.0
  • Apache » Shiro » Version: 2.0.1
    cpe:2.3:a:apache:shiro:2.0.1
  • Apache » Shiro » Version: 2.0.2
    cpe:2.3:a:apache:shiro:2.0.2
  • Apache » Shiro » Version: 2.0.3
    cpe:2.3:a:apache:shiro:2.0.3
  • Apache » Shiro » Version: 2.0.4
    cpe:2.3:a:apache:shiro:2.0.4
  • Apache » Shiro » Version: 2.0.5
    cpe:2.3:a:apache:shiro:2.0.5
  • Apache » Shiro » Version: 2.0.6
    cpe:2.3:a:apache:shiro:2.0.6
  • Apache » Shiro » Version: 2.0.7
    cpe:2.3:a:apache:shiro:2.0.7
  • Apache » Shiro » Version: 2.1.0
    cpe:2.3:a:apache:shiro:2.1.0
  • Apache » Shiro » Version: 3.0.0
    cpe:2.3:a:apache:shiro:3.0.0


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