Vulnerability 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) }) }) ```
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nodejs | Node.Js | >= 20.0.0, < 20.20.0 |
Related Weaknesses (CWE)
References
- https://nodejs.org/en/blog/vulnerability/december-2025-security-releasesRelease NotesVendor Advisory
FAQ
What is CVE-2025-59465?
CVE-2025-59465 is a vulnerability with a CVSS score of 7.5 (HIGH). 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, ...
How severe is CVE-2025-59465?
CVE-2025-59465 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-59465?
Check the references section above for vendor advisories and patch information. Affected products include: Nodejs Node.Js.