Node.js 0.10.x before 0.10.42, 0.12.x before 0.12.10, 4.x before 4.3.0, and 5.x before 5.6.0 allow remote attackers to conduct HTTP request smuggling attacks via a crafted Content-Length HTTP header.
CVE-2016-2086
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 7.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 41(Track)EG Risk 41/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation6% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 6%
- EPSS %ILE
- 93%
- KEV
- Not listed
Published
April 7, 2016
Last Modified
June 17, 2026
References (10)
- cve@mitrehttp://lists.fedoraproject.org/pipermail/package-announce/2016-February/177184.html
- cve@mitrehttp://lists.fedoraproject.org/pipermail/package-announce/2016-February/177673.html
- cve@mitrehttp://www.securityfocus.com/bid/83282
- cve@mitrehttps://nodejs.org/en/blog/vulnerability/february-2016-security-releases/
- cve@mitrehttps://security.gentoo.org/glsa/201612-43
- af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177184.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177673.html
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/83282
- af854a3a-2127-422b-91ae-364da2661108https://nodejs.org/en/blog/vulnerability/february-2016-security-releases/
- af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201612-43
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2016-2086?
CVE-2016-2086 is a high vulnerability published on April 7, 2016. Node.js 0.10.x before 0.10.42, 0.12.x before 0.12.10, 4.x before 4.3.0, and 5.x before 5.6.0 allow remote attackers to conduct HTTP request smuggling attacks via a crafted Content-Length HTTP header.
When was CVE-2016-2086 disclosed?
CVE-2016-2086 was first published in the National Vulnerability Database on April 7, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-2086 actively exploited?
CVE-2016-2086 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.0% of all scored CVEs.
What is the CVSS score of CVE-2016-2086?
CVE-2016-2086 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2016-2086?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-2086, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2016-2086
Is Your Infrastructure Affected by CVE-2016-2086?
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