What’s Vulnerable › Vulnerabilities

CVE-2026-44598: Apache Shiro Jakarta EE module: Open redirect and SSRF (requires valid credentials)

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-25 · updated 2026-07-24
• Weakness: CWE-601

Description

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.

Affected products

• Apache Software Foundation Apache Shiro: from 2.0.0 before 2.1.1; 3.0.0-alpha1 — fixed in 2.1.1

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Shiro 2.1.1. Check the vendor advisory for mitigations.

References

• https://shiro.apache.org/security-reports.html#cve_2026_44598
• http://www.openwall.com/lists/oss-security/2026/05/25/8

Get alerted when CVE-2026-44598 or the next vulnerability affects your stack