CVE-2026-23903 (GCVE-0-2026-23903)

Vulnerability from cvelistv5 – Published: 2026-02-09 09:26 – Updated: 2026-08-20 09:44
VLAI
Title
Apache Shiro: Auth bypass when accessing static files only on case-insensitive filesystems
Summary
Authentication Bypass by Alternate Name vulnerability in Apache Shiro. This issue affects Apache Shiro: before 2.0.7. Users are recommended to upgrade to version 2.0.7, which fixes the issue. The issue only effects static files. If static files are served from a case-insensitive filesystem, such as default macOS setup, static files may be accessed by varying the case of the filename in the request. If only lower-case (common default) filters are present in Shiro, they may be bypassed this way. Shiro 2.1.0 and later has a new parameters to remediate this issue shiro.ini: filterChainResolver.caseInsensitive = true application.properties: shiro.caseInsensitive=true Shiro 3.0.0 and later makes this the default in shiro.ini-based configurations. Shiro 3.0.1 and later makes this the default in all configurations, including programmatic and Spring / Spring Boot.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-09 16:17 UTC
CWE
  • CWE-289 - Authentication Bypass by Alternate Name
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Shiro Affected: 0 , < 2.0.7 (semver)
guessed Create a notification for this product.
Credits
Jesse Yang Lenny Pimak
Show details on NVD website
To clipboard 

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