{"cve":{"cve_id":"CVE-2026-21714","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":0.00454,"epss_percentile":0.3758,"epss_as_of":"2026-08-26","description":"A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOW_UPDATE frames on stream 0 (connection-level) that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up.\r\n\r\nThis vulnerability affects HTTP2 users on Node.js 20, 22, 24 and 25.","published_at":"2026-03-30T19:07:28.317000Z","last_modified_at":"2026-08-19T13:35:56.083000Z","cvss_v3_score":5.3,"cvss_v3_vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-401"],"nvd_references":["https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"],"vuln_status":"Analyzed","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":"2026-08-19T16:41:57.515079Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.0","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":"L","value_label":"Low"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"nodejs","vendor_name":"nodejs","product_slug":"node","product_name":"node","version_start":"20.20.1","version_start_inclusive":true,"version_end":"20.20.1","version_end_inclusive":true,"cpe23_uri":"cve5:nodejs:node:20.20.1:20.20.1"},{"vendor_slug":"nodejs","vendor_name":"nodejs","product_slug":"node","product_name":"node","version_start":"22.22.1","version_start_inclusive":true,"version_end":"22.22.1","version_end_inclusive":true,"cpe23_uri":"cve5:nodejs:node:22.22.1:22.22.1"},{"vendor_slug":"nodejs","vendor_name":"nodejs","product_slug":"node","product_name":"node","version_start":"24.14.0","version_start_inclusive":true,"version_end":"24.14.0","version_end_inclusive":true,"cpe23_uri":"cve5:nodejs:node:24.14.0:24.14.0"},{"vendor_slug":"nodejs","vendor_name":"nodejs","product_slug":"node","product_name":"node","version_start":"25.8.1","version_start_inclusive":true,"version_end":"25.8.1","version_end_inclusive":true,"cpe23_uri":"cve5:nodejs:node:25.8.1:25.8.1"},{"vendor_slug":"nodejs","vendor_name":"nodejs","product_slug":"node.js","product_name":"node.js","version_start":null,"version_start_inclusive":null,"version_end":"20.20.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-03-30T19:07:28.317000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:51:25.596901Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:51:25.596901Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:51:25.596901Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"}]}