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Vulnerability record · CVE-2016-3956 · published 2 July 2016

CVE-2016-3956: Ibm sdk information exposure vulnerability

Ibm · Sdk

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.

7.5 CVSS 3.1 High EPSS 6.7% · top 6.3% CWE-200 · Information exposure
7.5CVSS 3.1 base score, v2 5.0
6.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

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

Affected products

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

References

LinkTags
http://blog.npmjs.org/post/142036323955/fixing-a-bearer-token-vulnerability Vendor Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21980827 Vendor Advisory
https://github.com/npm/npm/commit/f67ecad59e99a03e5aad8e93cd1a086ae087cb29 PatchThird Party Advisory
https://github.com/npm/npm/commit/fea8cc92cee02c720b58f95f14d315507ccad401 PatchThird Party Advisory
https://github.com/npm/npm/issues/8380 Third Party Advisory
https://nodejs.org/en/blog/vulnerability/npm-tokens-leak-march-2016/ Vendor Advisory
http://blog.npmjs.org/post/142036323955/fixing-a-bearer-token-vulnerability Vendor Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21980827 Vendor Advisory
https://github.com/npm/npm/commit/f67ecad59e99a03e5aad8e93cd1a086ae087cb29 PatchThird Party Advisory
https://github.com/npm/npm/commit/fea8cc92cee02c720b58f95f14d315507ccad401 PatchThird Party Advisory
https://github.com/npm/npm/issues/8380 Third Party Advisory
https://nodejs.org/en/blog/vulnerability/npm-tokens-leak-march-2016/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-3956), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.