{"id":"CVE-2026-41720","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-41720","summary":"Spring LDAP has Authentication Bypass with Empty Password","details":"Spring LDAP's DirContextAuthenticationStrategy implementations do not reject a bind request where a non-empty username is paired with an empty or null password.\n\nAffected versions:\nSpring LDAP 2.4.0 through 2.4.4; 3.2.0 through 3.2.17; 3.3.0 through 3.3.7; 4.0.0 through 4.0.3.","published":"2026-06-09T06:31:57Z","modified":"2026-09-10T03:51:09.061872621Z","cvss":{"score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":{"score":0.00257,"percentile":0.16955,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.springframework.ldap:spring-ldap-core","fixedVersion":"4.0.4"},{"ecosystem":"Maven","name":"org.springframework.ldap:spring-ldap-core","fixedVersion":"3.3.8"},{"ecosystem":"Maven","name":"org.springframework.ldap:spring-ldap-core","fixedVersion":null},{"ecosystem":"Maven","name":"org.springframework.ldap:spring-ldap-core","fixedVersion":null}],"fix":{"url":"https://github.com/spring-projects/spring-ldap/commit/30b90c9fb61af87208ed051fc31349ef4d418f75","label":"spring-projects/spring-ldap@30b90c9"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41720"},{"type":"WEB","url":"https://github.com/spring-projects/spring-ldap/issues/407"},{"type":"WEB","url":"https://github.com/spring-projects/spring-ldap/commit/30b90c9fb61af87208ed051fc31349ef4d418f75"},{"type":"WEB","url":"https://github.com/spring-projects/spring-ldap/commit/5cc73a6b7fb1d2bcb950c4d69221c6d192d79795"},{"type":"WEB","url":"https://github.com/spring-projects/spring-ldap/commit/e2748d44bdce4f6cb4663b9b8d8462e34808f09c"},{"type":"PACKAGE","url":"https://github.com/spring-projects/spring-ldap"},{"type":"WEB","url":"https://github.com/spring-projects/spring-ldap/releases/tag/3.3.8"},{"type":"WEB","url":"https://github.com/spring-projects/spring-ldap/releases/tag/4.0.4"},{"type":"WEB","url":"https://spring.io/security/cve-2026-41720"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:51:09.061872621Z"}}