{"cve":"CVE-2018-11763","nvd":{"published":"2018-09-25T21:29:00.283","modified":"2026-06-17T01:36:32.157","status":"Modified","description":"In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9},"cwes":[],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html","http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html","http://www.securityfocus.com/bid/105414","http://www.securitytracker.com/id/1041713","https://access.redhat.com/errata/RHSA-2018:3558"],"products":["apache:http_server","canonical:ubuntu_linux","netapp:storage_automation_store","oracle:enterprise_manager_ops_center","oracle:hospitality_guest_access","oracle:instantis_enterprisetrack","oracle:retail_xstore_point_of_service","oracle:secure_global_desktop","redhat:enterprise_linux"],"source":"nvd","synced_at":"2026-10-19T20:53:14.491561039+00:00"},"epss":{"cve":"CVE-2018-11763","score":0.50847,"percentile":0.98925,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}