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Vulnerability record · CVE-2016-2216 · published 7 April 2016

CVE-2016-2216: Nodejs node.js improper input validation vulnerability

Nodejs · Node.Js

The HTTP header parsing code in Node.js 0.10.x before 0.10.42, 0.11.6 through 0.11.16, 0.12.x before 0.12.10, 4.x before 4.3.0, and 5.x before 5.6.0 allows remote attackers to bypass an HTTP response-splitting protection mechanism via UTF-8 encoded Unicode characters in the HTTP header, as demonstrated by %c4%8d%c4%8a.

7.5 CVSS 3.0 High EPSS 7.0% · top 6.1% CWE-20 · Improper input validation
7.5CVSS 3.0 base score, v2 4.3
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

The HTTP header parsing code in Node.js 0.10.x before 0.10.42, 0.11.6 through 0.11.16, 0.12.x before 0.12.10, 4.x before 4.3.0, and 5.x before 5.6.0 allows remote attackers to bypass an HTTP response-splitting protection mechanism via UTF-8 encoded Unicode characters in the HTTP header, as demonstrated by %c4%8d%c4%8a.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://blog.safebreach.com/2016/02/09/http-response-splitting-in-node-js-root-cause-analysis/
http://info.safebreach.com/hubfs/Node-js-Response-Splitting.pdf
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177184.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177673.html
http://packetstormsecurity.com/files/135711/Node.js-HTTP-Response-Splitting.html
http://www.securityfocus.com/bid/83141
https://nodejs.org/en/blog/vulnerability/february-2016-security-releases/ PatchVendor Advisory
https://security.gentoo.org/glsa/201612-43
http://blog.safebreach.com/2016/02/09/http-response-splitting-in-node-js-root-cause-analysis/
http://info.safebreach.com/hubfs/Node-js-Response-Splitting.pdf
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177184.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177673.html
http://packetstormsecurity.com/files/135711/Node.js-HTTP-Response-Splitting.html
http://www.securityfocus.com/bid/83141
https://nodejs.org/en/blog/vulnerability/february-2016-security-releases/ PatchVendor Advisory
https://security.gentoo.org/glsa/201612-43

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Source: NIST National Vulnerability Database (record CVE-2016-2216), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.