Vulnerability Details CVE-2026-44598
With valid login credentials, URL Redirection to Untrusted Site ('Open Redirect'), Server-Side Request Forgery (SSRF) vulnerability in Apache Shiro.
This issue affects Apache Shiro from 2.0-alpha to 2.1.0, and 3.0.0-alpha-1, only when using shiro-jakarta-ee integration module.
Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue by encrypting the cookie.
After successful login, Jakarta EE integration module uses shiroSavedRequest cookie to redirect to a particular web page after login.
This cookie was not validated, and can be forged to send a HTTP GET request from the server itself to an arbitrary URL from the cookie.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 30.5%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-44598
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cpe:2.3:a:apache:shiro:2.0.0
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cpe:2.3:a:apache:shiro:2.0.1
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cpe:2.3:a:apache:shiro:2.0.2
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cpe:2.3:a:apache:shiro:2.0.3
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cpe:2.3:a:apache:shiro:2.0.4
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cpe:2.3:a:apache:shiro:2.0.5
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cpe:2.3:a:apache:shiro:2.0.6
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cpe:2.3:a:apache:shiro:2.0.7
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cpe:2.3:a:apache:shiro:2.1.0
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cpe:2.3:a:apache:shiro:3.0.0