HIGH
npm: bearer token leak to non-registry hosts
Published Jul 2, 2016
7.5
HIGHCVSS 3.1
EPSS 6.75%
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.
Affected products
No data.
Configuration 1
Configuration 2
OR
- 0.10.0
- 0.10.1
- 0.10.2
- 0.10.3
- 0.10.4
- 0.10.5
- 0.10.6
- 0.10.7
- 0.10.8
- 0.10.9
- 0.10.10
- 0.10.11
- 0.10.12
- 0.10.13
- 0.10.14
- 0.10.15
- 0.10.16
- 0.10.16-isaacs-manual
- 0.10.17
- 0.10.18
- 0.10.19
- 0.10.20
- 0.10.21
- 0.10.22
- 0.10.23
- 0.10.24
- 0.10.25
- 0.10.26
- 0.10.27
- 0.10.28
- 0.10.29
- 0.10.30
- 0.10.31
- 0.10.32
- 0.10.33
- 0.10.34
- 0.10.35
- 0.10.36
- 0.10.37
- 0.10.38
- 0.10.39
- 0.10.40
- 0.10.41
- 0.12.0
- 0.12.1
- 0.12.2
- 0.12.3
- 0.12.4
- 0.12.5
- 0.12.6
- 0.12.7
- 0.12.8
- 0.12.9
- 4.0.0
- 4.1.0
- 4.1.1
- 4.1.2
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.2.4
- 4.2.5
- 4.2.6
- 4.3.0
- 4.3.1
- 4.3.1
- 4.3.1
- 4.3.2
- 4.4.0
- 4.4.0
- 4.4.0
- 4.4.0
- 4.4.0
- 4.4.1
- 5.0.0
- 5.1.0
- 5.1.1
- 5.2.0
- 5.3.0
- 5.4.0
- 5.4.1
- 5.5.0
- 5.6.0
- 5.7.0
- 5.7.1
- 5.8.0
- 5.8.1
- 5.9.0
- 5.9.1
No data.
Red Hat Software Collections
nodejs010-npm
Will not fix
Red Hat Software Collections
rh-nodejs4-npm
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Software Collections | nodejs010-npm | Will not fix | n/a |
| Red Hat Software Collections | rh-nodejs4-npm | Not affected | n/a |
npm
npm
Introduced 0 Fixed 2.15.1npm
npm
Introduced 3.0.0 Fixed 3.8.3
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | npm | 0 | 2.15.1 |
| npm | npm | 3.0.0 | 3.8.3 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
6.75% 0.06748
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06748
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (42 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.75% (0.06748) | 93.76th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.75% (0.06748) | 93.11th | v5 (v2026.06.15) |
| Mar 4, 2026 | 2.62% (0.02618) | 85.40th | v4 (v2025.03.14) |
| Mar 1, 2026 | 0.79% (0.00794) | 73.75th | v4 (v2025.03.14) |
| Feb 4, 2026 | 2.62% (0.02618) | 85.30th | v4 (v2025.03.14) |
| Feb 1, 2026 | 0.79% (0.00794) | 73.61th | v4 (v2025.03.14) |
| Jan 4, 2026 | 3.21% (0.03208) | 86.63th | v4 (v2025.03.14) |
| Jan 1, 2026 | 0.80% (0.00798) | 73.63th | v4 (v2025.03.14) |
| Dec 4, 2025 | 2.39% (0.02387) | 84.50th | v4 (v2025.03.14) |
| Dec 1, 2025 | 0.59% (0.00589) | 68.42th | v4 (v2025.03.14) |
| Nov 4, 2025 | 2.39% (0.02387) | 84.46th | v4 (v2025.03.14) |
| Nov 1, 2025 | 0.59% (0.00589) | 68.44th | v4 (v2025.03.14) |
| Oct 4, 2025 | 2.39% (0.02387) | 84.43th | v4 (v2025.03.14) |
| Oct 1, 2025 | 0.59% (0.00589) | 68.35th | v4 (v2025.03.14) |
| Sep 4, 2025 | 2.39% (0.02387) | 84.44th | v4 (v2025.03.14) |
| Sep 1, 2025 | 0.59% (0.00589) | 68.34th | v4 (v2025.03.14) |
| Aug 5, 2025 | 2.39% (0.02387) | 84.38th | v4 (v2025.03.14) |
| Aug 1, 2025 | 0.59% (0.00589) | 68.34th | v4 (v2025.03.14) |
| Jul 4, 2025 | 2.39% (0.02387) | 84.33th | v4 (v2025.03.14) |
| Jul 1, 2025 | 0.59% (0.00589) | 68.30th | v4 (v2025.03.14) |
| Jun 4, 2025 | 2.39% (0.02387) | 84.21th | v4 (v2025.03.14) |
| Jun 1, 2025 | 0.59% (0.00589) | 68.17th | v4 (v2025.03.14) |
| May 5, 2025 | 2.39% (0.02387) | 84.10th | v4 (v2025.03.14) |
| May 1, 2025 | 0.59% (0.00589) | 68.04th | v4 (v2025.03.14) |
| Apr 16, 2025 | 2.39% (0.02387) | 84.06th | v4 (v2025.03.14) |
| Apr 13, 2025 | 0.59% (0.00589) | 66.77th | v4 (v2025.03.14) |
| Apr 2, 2025 | 2.39% (0.02387) | 83.63th | v4 (v2025.03.14) |
| Apr 1, 2025 | 0.59% (0.00589) | 66.67th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.39% (0.02387) | 83.58th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.53% (0.06526) | 84.78th | v4 (v2025.03.14) |
| Mar 26, 2025 | 2.39% (0.02387) | 83.46th | v4 (v2025.03.14) |
| Mar 25, 2025 | 0.59% (0.00589) | 66.51th | v4 (v2025.03.14) |
| Mar 21, 2025 | 2.39% (0.02387) | 83.64th | v4 (v2025.03.14) |
| Mar 20, 2025 | 0.59% (0.00589) | 66.76th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.39% (0.02387) | 83.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00236) | 62.59th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.24% (0.00236) | 61.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00236) | 59.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
Weaknesses (2)
References (13)
- http://blog.npmjs.org/post/142036323955/fixing-a-bearer-token-vulnerability x_refsource_CONFIRMVendor Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21980827 x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2016-3956 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1328413 Issue Tracking
- https://github.com/advisories/GHSA-m5h6-hr3q-22h5 Advisory
- https://github.com/npm/npm/commit/f67ecad59e99a03e5aad8e93cd1a086ae087cb29 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/npm/npm/commit/fea8cc92cee02c720b58f95f14d315507ccad401 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/npm/npm/issues/8380 x_refsource_CONFIRMThird Party Advisory
- https://nodejs.org/en/blog/vulnerability/npm-tokens-leak-march-2016/ x_refsource_CONFIRMVendor Advisory
- https://nodesecurity.io/advisories/98
- https://nvd.nist.gov/vuln/detail/CVE-2016-3956
- https://www.cve.org/CVERecord?id=CVE-2016-3956
- https://www.npmjs.com/advisories/98
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 2, 2016
Updated Aug 6, 2024
Reserved Apr 5, 2016
Link CVE-2016-3956
CISA Vulnrichment
GHSA-M5H6-HR3Q-22H5 Updated n/a