CVE-2026-23903 - Apache Shiro: Auth bypass when accessing static files only on case-insensitive filesystems

CVE-2026-23903 - Apache Shiro: Auth bypass when accessing static files only on case-insensitive filesystems

https://cvefeed.io/rssfeed/latest.atom / Mon, 02/09/2026 - 14:01
CVE ID : CVE-2026-23903
Published : Feb. 9, 2026, 10:15 a.m. | 2 hours, 4 minutes ago
Description : 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 2.0.7 and later has a new parameters to remediate this issue shiro.ini: filterChainResolver.caseInsensitive = true application.propertie: shiro.caseInsensitive=true Shiro 3.0.0 and later (upcoming) makes this the default.
Severity: 0.0 | NA
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