CVE-2026-56848

CVE-2026-56848 NVD 説明 Node.js の HTTP/2 処理における欠陥により、nghttp2sessionmemrecv の実行中に nghttp2sessionmemsend が再入的に呼び出され、ヒープ使用後解放（heap-use-after-free）が発生する可能性があります。 この脆弱性は、Node.js 26.x、24.x、および 22.x に影響します。 注: 説明に記載されているバージョンは、上流の nodejs パッケージにのみ適用され、Alpine が配布している nodejs パッケージには適用されません。 リリースライン|...

nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service

A heap use-after-free vulnerability in the Node.js HTTP/2 component allows a remote attacker to crash the application, causing a denial of service. This is triggered by an unexpected re-entrant call to nghttp2sessionmemsend while nghttp2sessionmemrecv is still executing...

nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service

A heap use-after-free vulnerability in the Node.js HTTP/2 component allows a remote attacker to crash the application, causing a denial of service. This is triggered by an unexpected re-entrant call to nghttp2sessionmemsend while nghttp2sessionmemrecv is still executing...

nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service

A heap use-after-free vulnerability in the Node.js HTTP/2 component allows a remote attacker to crash the application, causing a denial of service. This is triggered by an unexpected re-entrant call to nghttp2sessionmemsend while nghttp2sessionmemrecv is still executing...

nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service

A heap use-after-free vulnerability in the Node.js HTTP/2 component allows a remote attacker to crash the application, causing a denial of service. This is triggered by an unexpected re-entrant call to nghttp2sessionmemsend while nghttp2sessionmemrecv is still executing...

nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service

A heap use-after-free vulnerability in the Node.js HTTP/2 component allows a remote attacker to crash the application, causing a denial of service. This is triggered by an unexpected re-entrant call to nghttp2sessionmemsend while nghttp2sessionmemrecv is still executing...

nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service

A heap use-after-free vulnerability in the Node.js HTTP/2 component allows a remote attacker to crash the application, causing a denial of service. This is triggered by an unexpected re-entrant call to nghttp2sessionmemsend while nghttp2sessionmemrecv is still executing...

CVE-2026-56848

A flaw in Node.js HTTP/2 handling allows nghttp2sessionmemsend to be called re-entrantly while nghttp2sessionmemrecv is executing, resulting in a heap-use-after-free. This vulnerability affects Node.js 26.x, 24.x, and 22.x...

Node.js: Re-entrant `nghttp2_session_mem_send()` during `nghttp2_session_mem_recv()` causes heap-use-after-free in Node.js HTTP/2

A flaw was discovered in the Node.js HTTP/2 implementation that allowed the nghttp2sessionmemsend function to be called re-entrantly while nghttp2sessionmemrecv was executing, resulting in a heap-use-after-free vulnerability. This issue affected Node.js versions 26.x, 24.x, and 22.x...