CVE-2025-59465

Name	CVE-2025-59465
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) }) }) ```
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nodejs (PTS)	bullseye	12.22.12~dfsg-1~deb11u4	vulnerable
	bullseye (security)	12.22.12~dfsg-1~deb11u7	vulnerable
	bookworm, bookworm (security)	18.20.4+dfsg-1~deb12u1	vulnerable
	trixie	20.19.2+dfsg-1	vulnerable
	forky, sid	22.22.0+dfsg+~cs22.19.6-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
nodejs	source	(unstable)	22.22.0+dfsg+~cs22.19.6-1

Notes

https://nodejs.org/en/blog/vulnerability/december-2025-security-releases#nodejs-http2-server-crashes-with-unhandled-error-when-receiving-malformed-headers-frame-cve-2025-59465---high