AIKIDO-2026-11164
spring-ldap-core is vulnerable to Improper Validation of Certificate with Host Mismatch
74
High Risk
This Affects:
spring-ldap-coreTL;DR
Spring LDAP's DirContextAuthenticationStrategy implementations do not reject a bind request where a non-empty username is paired with an empty or null password. RFC 4513 Section 5.1.2 defines this as an unauthenticated bind. On LDAP servers that permit such binds, an attacker with a valid username and an empty password can bypass password verification.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
spring-ldap-core is vulnerable to Improper Validation of Certificate with Host Mismatch in versions 0.0.0 - 3.3.7 and 4.0.0 - 4.0.3.
How to fix this
Upgrade the org.springframework.ldap:spring-ldap-core library to the patch version.
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