{"cve":{"cve_id":"CVE-2026-47838","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00116,"epss_percentile":0.01881,"epss_as_of":"2026-06-23","description":"SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.\n\nAffected versions:\nSpring Security 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10.","published_at":"2026-06-09T23:50:07.988000Z","last_modified_at":null,"cvss_v3_score":6.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-287"],"nvd_references":["https://spring.io/security/cve-2026-47838"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:30:42.157376Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-security","product_name":"Spring Security","version_start":"5.7.0","version_start_inclusive":true,"version_end":"5.7.25","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:5.7.0:5.7.25"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-security","product_name":"Spring Security","version_start":"5.8.0","version_start_inclusive":true,"version_end":"5.8.27","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:5.8.0:5.8.27"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-security","product_name":"Spring Security","version_start":"6.3.0","version_start_inclusive":true,"version_end":"6.3.18","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:6.3.0:6.3.18"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-security","product_name":"Spring Security","version_start":"6.4.0","version_start_inclusive":true,"version_end":"6.4.18","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:6.4.0:6.4.18"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-security","product_name":"Spring Security","version_start":"6.5.0","version_start_inclusive":true,"version_end":"6.5.11","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:6.5.0:6.5.11"}],"exploit_refs":[],"news":[],"references":[{"url":"https://spring.io/security/cve-2026-47838","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-09T23:50:07.988000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:54:57.553414Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:57.553414Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:57.553414Z","label":"CVSS score revised","source":"cvelistv5"}]}