CVE-2025-59465
Severity
7.5HIGH
EPSS
0.1%
top 77.14%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 20
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages4 packages
🔴Vulnerability Details
4OSV▶
CVE-2025-59465: A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node↗2026-01-20
CVEList▶
CVE-2025-59465: A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node↗2026-01-20
GHSA▶
GHSA-w2pg-hw7v-f7m9: A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node↗2026-01-20
OSV▶
CVE-2025-59465: A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node↗2026-01-20