From Spring Security Advisories
Thu, August 20
cve-2026-59270 - CRITICAL - Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces
Spring Security's embedded UnboundID LDAP server ( UnboundIdContainer ) unconditionally registers an administrative credential and binds its listener to all available network interfaces. An attacker who could reach the LDAP listener port could authenticate using the well-known administrative bind DN, and then read or modify entries in the in-memory directory. Preconditions : The application uses UnboundIdContainer — configured directly or through Spring Boot auto-configuration ( spring.ldap.embedded.* properties). The LDAP listener port is reachable from the attacker's network position (not r…