CVE-2026-56846

High

Open

TLP:CLEAR

NVD CVE.org

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Description

A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion. This vulnerability affects Node.js **24.x** and **22.x**.

Details

CVSS Score: 7.5
EPSS Score ⓘ: 0.62%

46.7th percentile
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence: 90%
Published: Aug 4, 2026
Last Modified: Aug 4, 2026

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