A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input is directly concatenated into the LDAP DN template without any escaping of RFC 2253 special characters. This allows an attacker to manipulate the DN structure used for LDAP bind authentication, potentially bypassing authentication or impersonating other users.
This issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when usingĀ DefaultLdapRealm
Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.
Metrics
Affected Vendors & Products
References
History
Thu, 18 Jun 2026 04:45:00 +0000
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Apache
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Apache shiro |
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ssvc
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Wed, 17 Jun 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
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| Description | A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input is directly concatenated into the LDAP DN template without any escaping of RFC 2253 special characters. This allows an attacker to manipulate the DN structure used for LDAP bind authentication, potentially bypassing authentication or impersonating other users. This issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when usingĀ DefaultLdapRealm Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue. | |
| Title | Apache Shiro: LDAP DN Injection in DefaultLdapRealm | |
| Weaknesses | CWE-90 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: apache
Published: 2026-06-17T13:07:44.488Z
Updated: 2026-06-17T17:02:22.861Z
Reserved: 2026-05-28T17:20:37.590Z
Link: CVE-2026-49268
Updated: 2026-06-17T17:02:22.861Z
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