Vulnerability GHSA-x96m-rh44-vgv8

High Risk
HIGH RISK
CVSS Score: 8.0
Score Range: 7.0–8.9
High severity vulnerabilities (CVSS 7.0–8.9). Serious vulnerabilities that should be prioritized soon after critical fixes.
4 months ago
June 17, 2026 at 06:35 PM UTC
Apache Shiro: LDAP DN Injection in DefaultLdapRealm
1.0.0-incubating - 2.2.0 and 3.0.0-alpha-1
1.0.0-incubating - 2.2.0 and 3.0.0-alpha-1

Summary

Apache Shiro: LDAP DN Injection in DefaultLdapRealm

Details

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.

Timeline

Published
4 months ago
June 17, 2026 at 06:35 PM UTC
Fixed (2.2.1)
Unknown
Unknown
Last Modified
1 month ago
September 10, 2026 at 03:50 AM UTC