CVE-2025-59465

7.5 HIGH 4% exploit odds Fix listed Denial of service Server

What it is

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) }) }) ```

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 4.0% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-01-20 21:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-07-15 02:17 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 4.0% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-01-20 21:16 UTC
Last modified: 2026-07-15 02:17 UTC
Exploit probability: 4.0% · EPSS, next 30 days
Weakness: CWE-400 · Uncontrolled resource consumption
Record status: Modified

Affected

Nodejs node.js < 20.20.0
Nodejs node.js < 22.22.0
Nodejs node.js < 24.13.0
Nodejs node.js < 25.3.0

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2025-59465.md and follow it. Check whether this project is affected by CVE-2025-59465. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

https://nodejs.org/en/blog/vulnerability/december-2025-security-releases

References

NVD record · CVE.org record