What is CVE-2017-15896?

CVE-2017-15896 is a critical-severity vulnerability in Node.js. CVSS score: 9.1/10. Published 2017-12-11.

How severe is CVE-2017-15896?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2017-15896 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Node.js

CVE-2017-15896

Node.js was affected by OpenSSL vulnerability CVE-2017-3737 in regards to the use of SSL_read() due to TLS handshake failure. The result was that an active network attacker could send application data to Node.js using the TLS or HTTP2 modules in a way that bypassed TLS authentication and encryption.

Published 2017-12-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.024 (83.3th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Node.js
The Node.js Project — versions 9.0.0 and higher, 8.0.0 and higher, 6.0.0 and higher

Public proof-of-concept exploits

References

nodejs.org/en/blog/vulnerability/december-2017-security-releases/ (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2017-15896?: CVE-2017-15896 is a critical-severity vulnerability in Node.js. CVSS score: 9.1/10. Published 2017-12-11.
How severe is CVE-2017-15896?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2017-15896 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.