Vulnerability Description
When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module. This issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context. Upgrade to version 3.0.0 or later, which fixes the issue.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-56091?
CVE-2026-56091 is a documented vulnerability. When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to https://www.cve.org...
How severe is CVE-2026-56091?
CVSS scoring is not yet available for CVE-2026-56091. Check NVD for updates.
Is there a patch for CVE-2026-56091?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.