How severe is CVE-2016-3956?

CVE-2016-3956 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-3956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3956?

CVE-2016-3956 primarily affects Ibm Sdk. In total, 92 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3956?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-3956 published?

CVE-2016-3956 was published on 2016-07-02 and last updated on 2026-06-17.

CVE-2016-3956

CVE-2016-3956 is a high-severity vulnerability in Ibm Sdk with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Ibm Sdk
Published: 2016-07-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2016-3956?: 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.
How severe is CVE-2016-3956?: CVE-2016-3956 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-3956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3956?: CVE-2016-3956 primarily affects Ibm Sdk. In total, 92 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-3956 published?: CVE-2016-3956 was published on 2016-07-02 and last updated on 2026-06-17.

References

Affected products (92)

cpe:2.3:a:ibm:sdk:*:*:*:*:*:nodejs:*:*
cpe:2.3:a:nodejs:node.js:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.3:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.4:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.5:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.6:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.7:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.8:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.9:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.10:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.11:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.12:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.13:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.14:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.15:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.16:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.16-isaacs-manual:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.17:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.18:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.19:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.20:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.21:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.22:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.23:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.24:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.25:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.26:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.27:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.28:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.29:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.30:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.31:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.32:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.33:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.34:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.35:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.36:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:0.10.37:*:*:*:*:*:*:*

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