CVE Tools
Sign in

CVE-2016-3956

Published: Jul 2, 2016Updated: May 6, 2026 Sources: CVE List NVD GHSACWE-200
NVD MITRE
7.5CVSSHIGH
EPSS Score
6.7%
Top 6.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The CLI in npm before 2.15.1 and 3.x before 3.8.3, as used in Node.js 0.10 before 0.10.44, 0.12 before 0.12.13, 4 before 4.4.2, and 5 before 5.10.0, includes bearer tokens with arbitrary requests, which allows remote HTTP servers to obtain sensitive information by reading Authorization headers.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-200

Affected Products

n/an/a
sdkibm
On-prem
Enterprise Software / itsm-monitoring
node.jsnodejsOSS Libraries
npmnpmjs
Library
OSS Libraries / npm
npmnpmOSS Libraries
ibmcommercialUSEnterprise Softwareaka international business machines
nodejsoss-projectUSOSS Librariesaka node.js, node
npmjsoss-projectOSS Librariesaka npm, tar, arborist
npmpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/npm/npm/issues/8380
github.com
https://github.com/npm/npm/commit/f67ecad59e99a03e5aad8e93cd1a086ae087cb29
github.com
http://www-01.ibm.com/support/docview.wss?uid=swg21980827
www-01.ibm.com
and 7 more references View all →

Timeline

Published
Jul 2, 2016
Last Updated
May 6, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2016-3956 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows