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)
})
})
```
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 21 Jan 2026 21:15:00 +0900

Type Values Removed Values Added
Title nodejs: Nodejs denial of service
Weaknesses CWE-248
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important


Wed, 21 Jan 2026 20:30:00 +0900

Type Values Removed Values Added
First Time appeared Nodejs
Nodejs nodejs
Vendors & Products Nodejs
Nodejs nodejs

Wed, 21 Jan 2026 05:45:00 +0900

Type Values Removed Values Added
Description 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) }) }) ```
References
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-01-20T20:41:55.317Z

Reserved: 2025-09-16T15:00:07.875Z

Link: CVE-2025-59465

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-01-20T21:16:04.010

Modified: 2026-01-20T21:16:04.010

Link: CVE-2025-59465

cve-icon Redhat

Severity : Important

Publid Date: 2026-01-20T20:41:55Z

Links: CVE-2025-59465 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-01-21T20:18:38Z

Weaknesses