Session Fixation Affecting org.apache.shiro:shiro-core package, versions [,2.2.0)[3.0.0-alpha-1,3.0.0-alpha-2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHESHIRO-17116505
- published1 Jun 2026
- disclosed25 May 2026
- creditRasmus Moorats
Introduced: 25 May 2026
NewCVE-2026-43827 (opens in a new tab)How to fix?
Upgrade org.apache.shiro:shiro-core to version 2.2.0, 3.0.0-alpha-2 or higher.
Overview
org.apache.shiro:shiro-core is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography, and session management.
Affected versions of this package are vulnerable to Session Fixation during the login operation in DefaultSecurityManager.java and DefaultWebSecurityManager.java. An attacker can hijack authenticated user sessions by reusing a valid session identifier after login.