CVE Watch11 ago 2026

CVE-2023-44487

HTTP/2 Rapid Reset Attack Vulnerability

CVSS

7.5

Alto

EPSS

100.0%

p100

KEV

SÍ

10 oct 2023

Exploit Today

0-100

Publicado: 10 oct 2023 · Última mod.: 11 ago 2026 · CWE-400

EPSS · 30d

100.0%EPSS · 30 días100.0%

2026-09-162026-10-14

Ficha del catálogo KEV

Producto

IETF / HTTP/2

Vulnerabilidad

HTTP/2 Rapid Reset Attack Vulnerability

Añadido a KEV

10 oct 2023

Remediar antes de

31 oct 2023

Uso conocido en ransomware

Descripción resumida

HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

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

Descripción técnica

The 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.

Referencias oficiales

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