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HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.","epss":{"date":"2026-11-12","epss":0.99999,"percentile":0.99998},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2023-44487","cwes":["CWE-400"],"dateAdded":"2023-10-10","dueDate":"2023-10-31","forensicTriage":"No","knownRansomwareCampaignUse":"Unknown","notes":"This vulnerability affects a common open-source component, third-party library, or protocol used by different products. For more information, please see: HTTP/2 Rapid Reset Vulnerability, CVE-2023-44487 | CISA: https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487; https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/;  https://nvd.nist.gov/vuln/detail/CVE-2023-44487","product":"HTTP/2","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","shortDescription":"HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).","vendorProject":"IETF","vulnerabilityName":"HTTP/2 Rapid Reset Attack Vulnerability"},"kev_checked":1794522003,"products":"n/a 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Rapid Reset Attack Vulnerability","updated_at":1794500401,"workarounds":""},"sources":[]}