What’s Vulnerable › Vulnerabilities

CVE-2026-48589: Apache Shiro: Jakarta EE open redirect via untrusted Referer in post-login redirect flow

• 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

Apache Shiro’s Jakarta EE module used the HTTP Referer header in certain cases to issue redirect after a user login. In affected versions, insufficient validation of this client-controlled value could allow an attacker to influence the redirect target in applications using the Jakarta EE module. This issue affects Apache Shiro from 2.0-alpha to 2.2.0, and 3.0.0-alpha-1, only when using shiro-jakarta-ee integration module.

Affected products

• Apache Software Foundation Apache Shiro: from 2.0.0 before 2.2.1; 3.0.0-alpha1 — fixed in 2.2.1

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Shiro 2.2.1. Check the vendor advisory for mitigations.

References

• https://shiro.apache.org/security-reports.html#cve_2026_48589
• http://www.openwall.com/lists/oss-security/2026/05/25/9

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