CVE-2026-23903

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/5jjf0hnjcol58z2m5y255c7scz1lnp8k	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/02/08/1	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-09 10:15

Updated : 2026-02-11 18:30

NVD link : CVE-2026-23903

Mitre link : CVE-2026-23903

CVE.ORG link : CVE-2026-23903

JSON object : View

Products Affected

apache

shiro

CWE

CWE-289

Authentication Bypass by Alternate Name

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