GitHub Advisoryadvisory · Maven

GHSA-x96m-rh44-vgv8 Apache Shiro: LDAP DN Injection in DefaultLdapRealm

HIGH Published 2026-06-17 Modified 2026-06-18 Official page ↗
Aliases
CVE-2026-49268
Ecosystem
Maven
Packages
org.apache.shiro:shiro-core
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/R:A/RE:L/U:Red
Weaknesses
CWE-90
Reviewed
2026-06-18

Affected packages

• Maven org.apache.shiro:shiro-core: < 2.2.1 → fixed in 2.2.1 • Maven org.apache.shiro:shiro-core: >= 3.0.0-alpha-0, < 3.0.0-alpha-2 → fixed in 3.0.0-alpha-2

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 using DefaultLdapRealm Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.

Related

Alias · CVE (1)

  • CVE-2026-49268 A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. vulnerability

Weakness · CWE (1)

  • CWE-90 Improper Neutralization of Special Elements used in an LDAP Query weakness

References