## cve-2026-59270 - CRITICAL - Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces

- 種別: advisory
- 重大度: critical
- 関連技術: spring, java
- CVE: CVE-2026-59270
- 公開日時: 2026-08-20T00:00:00.000Z
- 情報源: Spring Security Advisories (https://spring.io/security/cve-2026-59270)
- パーマリンク: https://vulnpulse.app/items/spring-security-fe23e2ef0ebd

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…