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CVE-2025-59465

Published: 1/20/2026 Last updated: 1/21/2026 Reserved: 9/16/2025

A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by triggering an unhandled `TLSSocket` error `ECONNRESET`. Instead of safely closing the connection, the process crashes, enabling a remote denial of service. This primarily affects applications that do not attach explicit error handlers to secure sockets, for example: ``` server.on('secureConnection', socket => { socket.on('error', err => { console.log(err) }) }) ```

CNA assigner: hackerone (36234546-b8fa-4601-9d6f-f4e334aa8ea1) Requested by: n/a

Metrics

Version Score Severity Vector String
3.0 7.5 High CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (1)

conf-npm

Products affected (0)

No product listed.

References (2)