{"cve":{"cve_id":"CVE-2026-11352","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":0.00715,"epss_percentile":0.52752,"epss_as_of":"2026-10-15","description":"An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server\nto trigger a remote denial of service against a curl or libcurl client.\nBecause the helper function discards zero-length UDP datagrams before counting\nthem toward the per-call packet budget, a connected QUIC peer can continuously\nstream empty datagrams to indefinitely stall the client.","published_at":"2026-07-03T06:12:10.777000Z","last_modified_at":"2026-09-15T07:16:25.353000Z","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":"poc","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-835"],"nvd_references":["https://curl.se/docs/CVE-2026-11352.json","https://curl.se/docs/CVE-2026-11352.html","https://hackerone.com/reports/3783438"],"vuln_status":"Modified","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":"2026-07-03T07:34:23.731878Z","updated_at":"2026-09-16T00:00:38.137528Z"},"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":"curl","vendor_name":"curl","product_slug":"curl","product_name":"curl","version_start":"8.20.0","version_start_inclusive":true,"version_end":"8.20.0","version_end_inclusive":true,"cpe23_uri":"cve5:curl:curl:8.20.0:8.20.0"},{"vendor_slug":"curl","vendor_name":"curl","product_slug":"curl","product_name":"curl","version_start":"8.19.0","version_start_inclusive":true,"version_end":"8.19.0","version_end_inclusive":true,"cpe23_uri":"cve5:curl:curl:8.19.0:8.19.0"},{"vendor_slug":"curl","vendor_name":"curl","product_slug":"curl","product_name":"curl","version_start":"8.18.0","version_start_inclusive":true,"version_end":"8.18.0","version_end_inclusive":true,"cpe23_uri":"cve5:curl:curl:8.18.0:8.18.0"},{"vendor_slug":"curl","vendor_name":"curl","product_slug":"curl","product_name":"curl","version_start":"8.18.0","version_start_inclusive":true,"version_end":"8.20.1","version_end_inclusive":false,"cpe23_uri":"cve5:curl:curl:8.18.0:8.20.1"},{"vendor_slug":"curl","vendor_name":"curl","product_slug":"curl","product_name":"curl","version_start":"6a3d0b6d631d5e9bec797306b5b41a9f440a088d","version_start_inclusive":true,"version_end":"56eca2afb4806f1032872fa97d1834b3c1385276","version_end_inclusive":false,"cpe23_uri":"cve5:curl:curl:6a3d0b6d631d5e9bec797306b5b41a9f440a088d:56eca2afb4806f1032872fa97d1834b3c1385276"},{"vendor_slug":"haxx","vendor_name":"haxx","product_slug":"curl","product_name":"curl","version_start":"8.18.0","version_start_inclusive":true,"version_end":"8.21.0","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://curl.se/docs/CVE-2026-11352.json","source_type":"MISC","tags":[]},{"url":"https://curl.se/docs/CVE-2026-11352.html","source_type":"MISC","tags":[]},{"url":"https://hackerone.com/reports/3783438","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-07-03T06:12:10.777000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-07-06T19:42:58.940665Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-06T19:42:58.940665Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-06T19:42:58.940665Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-07-06T19:42:58.940665Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-07-06T19:42:58.940665Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-07-06T19:42:58.940665Z","label":"CVSS score revised","source":"vulnrichment"}]}