{"cve":{"cve_id":"CVE-2026-40988","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":0.00331,"epss_percentile":0.24733,"epss_as_of":"2026-06-23","description":"An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory.\n\nAffected versions:\nSpring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.","published_at":"2026-06-09T23:46:15.589000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","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-400"],"nvd_references":["https://spring.io/security/cve-2026-40988"],"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":"2026-06-28T23:30:14.283747Z"},"effective_severity":"HIGH","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":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"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":"5.7.24","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:5.7.0:5.7.24"},{"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":"5.8.26","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:5.8.0:5.8.26"},{"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":"6.3.17","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:6.3.0:6.3.17"},{"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":"6.4.17","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:6.4.0:6.4.17"},{"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":"6.5.10.2","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:6.5.0:6.5.10.2"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-security","product_name":"Spring Security","version_start":"7.0.0","version_start_inclusive":true,"version_end":"7.0.5.1","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-security:7.0.0:7.0.5.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://spring.io/security/cve-2026-40988","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-09T23:46:15.589000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:54:01.174321Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:01.174321Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:54:01.174321Z","label":"CVSS score revised","source":"cvelistv5"}]}