Authentication Bypass by Alternate Name Affecting org.apache.shiro:shiro-web package, versions [2.0.0-alpha-1,3.0.0)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JAVA-ORGAPACHESHIRO-17756771
- published1 Jul 2026
- disclosed25 Jun 2026
- creditUnknown
Introduced: 25 Jun 2026
CVE-2026-56091 (opens in a new tab)How to fix?
Upgrade org.apache.shiro:shiro-web to version 3.0.0 or higher.
Overview
org.apache.shiro:shiro-web 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 Authentication Bypass by Alternate Name in the shiro-guice module when deployed in a web servlet context. An attacker can gain unauthorized access by sending specially crafted HTTP requests.