CVE-2023-46749: 
Apache Shiro vulnerability analysis and mitigation

Apache Shiro versions before 1.13.0 or 2.0.0-alpha-4 contain a security vulnerability identified as CVE-2023-46749. The vulnerability was discovered and reported in October 2023, affecting Apache Shiro's authentication mechanism. This security flaw involves a path traversal attack that could potentially lead to authentication bypass when used in conjunction with path rewriting functionality (NVD).

The vulnerability is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) with a CVSS v3.1 base score of 6.5 (Medium). The attack vector is network-based (AV:N) with low attack complexity (AC:L), requiring low privileges (PR:L) and no user interaction (UI:N). The scope is unchanged (S:U) with no impact on confidentiality (C:N), high impact on integrity (I:H), and no impact on availability (A:N) (NVD).

The vulnerability could allow attackers to bypass authentication mechanisms in applications using affected versions of Apache Shiro. This is particularly concerning when the application implements path rewriting, as it could lead to unauthorized access to protected resources (NVD).

Users are advised to update to Apache Shiro version 1.13.0 or later, or 2.0.0-alpha-4 or later. Alternatively, ensure that the 'blockSemicolon' feature is enabled, which is the default setting. This serves as an effective mitigation against the vulnerability (NVD).