{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-41720: Authentication Bypass with Empty Password in Spring LDAP","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-41720","status":"final","version":"1","initial_release_date":"2026-06-09T03:48:56.229Z","current_release_date":"2026-06-10T03:58:34.141Z","revision_history":[{"date":"2026-06-09T03:48:56.229Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-41720 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-41720"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-41720"},{"category":"external","summary":"spring.io","url":"https://spring.io/security/cve-2026-41720"}]},"product_tree":{"branches":[{"category":"vendor","name":"Spring","branches":[{"category":"product_name","name":"Spring LDAP","branches":[{"category":"product_version_range","name":">=2.4.0 <2.4.5","product":{"name":"Spring Spring LDAP >=2.4.0 <2.4.5","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_ldap:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=3.2.0 <3.2.18","product":{"name":"Spring Spring LDAP >=3.2.0 <3.2.18","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_ldap:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=3.3.0 <3.3.8","product":{"name":"Spring Spring LDAP >=3.3.0 <3.3.8","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_ldap:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=4.0.0 <4.0.4","product":{"name":"Spring Spring LDAP >=4.0.0 <4.0.4","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_ldap:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-41720","title":"Authentication Bypass with Empty Password in Spring LDAP","notes":[{"category":"description","text":"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.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":7.4,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 2.4.5, 3.2.18, 3.3.8, 4.0.4.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4"]}]}]}