{"cve":{"cve_id":"CVE-2026-40973","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":0.00136,"epss_percentile":0.03336,"epss_as_of":"2026-06-23","description":"A local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`. When `server.servlet.session.persistent` is set to `true` and the attack persists across application restarts, this may allow the attacker to read session information and hijack authenticated users or deploy a gadget chain and execute code as the application's user.\n\nAffected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); predictable temp directory / `ApplicationTemp` ownership verification. Versions that are no longer supported are also affected per vendor advisory.","published_at":"2026-04-27T23:29:51.946000Z","last_modified_at":null,"cvss_v3_score":7.0,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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-377"],"nvd_references":["https://spring.io/security/cve-2026-40973"],"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":"L","value_label":"Local"},{"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":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-boot","product_name":"Spring Boot","version_start":"4.0.0","version_start_inclusive":true,"version_end":"4.0.6","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-boot:4.0.0:4.0.6"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-boot","product_name":"Spring Boot","version_start":"3.5.0","version_start_inclusive":true,"version_end":"3.5.14","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-boot:3.5.0:3.5.14"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-boot","product_name":"Spring Boot","version_start":"3.4.0","version_start_inclusive":true,"version_end":"3.4.16","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-boot:3.4.0:3.4.16"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-boot","product_name":"Spring Boot","version_start":"3.3.0","version_start_inclusive":true,"version_end":"3.3.19","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-boot:3.3.0:3.3.19"},{"vendor_slug":"spring","vendor_name":"Spring","product_slug":"spring-boot","product_name":"Spring Boot","version_start":"2.7.0","version_start_inclusive":true,"version_end":"2.7.33","version_end_inclusive":false,"cpe23_uri":"cve5:spring:spring-boot:2.7.0:2.7.33"}],"exploit_refs":[],"news":[],"references":[{"url":"https://spring.io/security/cve-2026-40973","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-04-27T23:29:51.946000Z","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"}]}