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nodejs

A vulnerability in Node.js HTTP/2 handling allows the function nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, leading to a heap-use-after-free condition. This affects Node.js versions 22.x, 24.x, and 26.x. The issue can cause a denial of service due to application crashes but does not impact confidentiality or integrity.

The flaw in Node.js HTTP/2 implementation involves improper handling of re-entrant calls between nghttp2_session_mem_send() and nghttp2_session_mem_recv(), resulting in a heap-use-after-free vulnerability. This memory corruption can cause application instability or crashes. The vulnerability affects Node.js versions 22.x, 24.x, and 26.x as explicitly stated. The CVSS 3.0 score is 7.5, reflecting a network attack vector with low complexity and no privileges required, causing availability impact only.

A vulnerability in Node.js HTTP/2 handling allows the function nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, leading to a heap-use-after-free condition. This affects Node.js versions 22.x, 24.x, and 26.x. The issue can cause a denial of service d

Nodejs: A flaw in Node.js HTTP/2 handling allows nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing,… (CVE-2026-56848)

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