Apache Shiro up to 2.1.0/3.0.0-alpha-1 Jakarta EE redirect

Summaryinfo

A vulnerability labeled as problematic has been found in Apache Shiro up to 2.1.0/3.0.0-alpha-1. Affected by this issue is some unknown functionality of the component Jakarta EE Module. Such manipulation leads to redirect. This vulnerability is traded as CVE-2026-44598. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apache Shiro up to 2.1.0/3.0.0-alpha-1. Affected by this issue is an unknown part of the component Jakarta EE Module. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at shiro.apache.org. This vulnerability is handled as CVE-2026-44598 since 05/07/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/01/2026). The MITRE ATT&CK project declares the attack technique as T1204.001.

Upgrading to version 2.2.0 or 3.0.0-alpha-2 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Shiro

Version

• 2.0
• 2.1.0
• 3.0.0-alpha-1

License

• open-source

Website

• Vendor: https://www.apache.org/

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