{"cve":{"cve_id":"CVE-2023-45288","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":0.91969,"epss_percentile":0.9981,"epss_as_of":"2026-08-26","description":"An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.","published_at":"2024-04-04T20:37:30.714000Z","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":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":null,"nvd_references":["https://go.dev/issue/65051","https://go.dev/cl/576155","https://groups.google.com/g/golang-announce/c/YgW0sx8mN3M","https://pkg.go.dev/vuln/GO-2024-2687","https://security.netapp.com/advisory/ntap-20240419-0009/","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYFHIQ6XRKRYBI2F5UESH67BJBQXUPT/","http://www.openwall.com/lists/oss-security/2024/04/05/4","http://www.openwall.com/lists/oss-security/2024/04/03/16"],"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":"2026-06-29T01:38:55.890154Z"},"effective_severity":"HIGH","badges":["epss"],"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":"golang.org-x-net","vendor_name":"golang.org/x/net","product_slug":"golang.org-x-net-http2","product_name":"golang.org/x/net/http2","version_start":"0","version_start_inclusive":true,"version_end":"0.23.0","version_end_inclusive":false,"cpe23_uri":"cve5:golang.org-x-net:golang.org-x-net-http2:0:0.23.0"},{"vendor_slug":"go-standard-library","vendor_name":"Go standard library","product_slug":"net-http","product_name":"net/http","version_start":"0","version_start_inclusive":true,"version_end":"1.21.9","version_end_inclusive":false,"cpe23_uri":"cve5:go-standard-library:net-http:0:1.21.9"},{"vendor_slug":"go-standard-library","vendor_name":"Go standard library","product_slug":"net-http","product_name":"net/http","version_start":"1.22.0-0","version_start_inclusive":true,"version_end":"1.22.2","version_end_inclusive":false,"cpe23_uri":"cve5:go-standard-library:net-http:1.22.0-0:1.22.2"}],"exploit_refs":[],"news":[],"references":[{"url":"https://go.dev/issue/65051","source_type":"MISC","tags":[]},{"url":"https://go.dev/cl/576155","source_type":"MISC","tags":[]},{"url":"https://groups.google.com/g/golang-announce/c/YgW0sx8mN3M","source_type":"MISC","tags":[]},{"url":"https://pkg.go.dev/vuln/GO-2024-2687","source_type":"MISC","tags":[]},{"url":"https://security.netapp.com/advisory/ntap-20240419-0009/","source_type":"MISC","tags":[]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYFHIQ6XRKRYBI2F5UESH67BJBQXUPT/","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2024/04/05/4","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://www.openwall.com/lists/oss-security/2024/04/03/16","source_type":"MAILING_LIST","tags":["mailing-list"]}],"timeline":[{"type":"published","at":"2024-04-04T20:37:30.714000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:30:18.424510Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:30:18.424510Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:30:18.424510Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:38:55.890154Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:38:55.890154Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:38:55.890154Z","label":"SSVC decision revised","source":"vulnrichment"}]}