macOS
CVE-2026-23903
MEDIUM
GHSA-c244-p6m5-vqj6
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
3Blast Radius
ecosystem impact- 18 maven packages depend on org.apache.shiro:shiro-spring (5 direct, 13 indirect)
Ecosystem-wide dependent count for version 2.1.0.
DescriptionCVE.org
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.
AnalysisAI
Authentication Bypass by Alternate Name vulnerability in Apache Shiro. This issue affects Apache Shiro: before 2.0.7. [CVSS 5.3 MEDIUM]
Technical ContextAI
Affects Shiro. 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
RemediationAI
Update to version 2.0.7 or later. Restrict network access to the affected service where possible.
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Same weakness CWE-289 – Authentication Bypass by Alternate Name
View allSame technique Authentication Bypass
View allVendor StatusVendor
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External POC / Exploit Code
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