CVE-2018-16491
Prototype Pollution in node.extend
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
CVE-2018-16491- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-400, CWE-74
- Updated
- 2026-11-02
CVE List No score
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
CVE-2018-16491- Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2019-0337 No score
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
EUVD-2019-0337- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r96c-57pf-9jjm
Prototype Pollution in node.extend
Versions of node.extend before 1.1.7 or 2.0.1 are vulnerable to prototype pollution.
Recommendation
Update to version 1.1.7, 2.0.1 or later.
- Record
GHSA-r96c-57pf-9jjm- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
CVE-2018-16491- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-16491
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
DEBIAN-CVE-2018-16491- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-r96c-57pf-9jjm
Prototype Pollution in node.extend
Versions of node.extend before 1.1.7 or 2.0.1 are vulnerable to prototype pollution.
Recommendation
Update to version 1.1.7, 2.0.1 or later.
- Record
GHSA-r96c-57pf-9jjm- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-16491
A prototype pollution vulnerability was found in node.extend <1.1.7, ~<2.0.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
UBUNTU-CVE-2018-16491- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
node.extendnpm |
before 1.1.7 | 1.1.7 |
node.extendnpm |
2.0.0 to 2.0.0 | 2.0.1 |
node-extendDebian:12 |
before 3.0.2-1 | 3.0.2-1 |
node-extendDebian:13 |
before 3.0.2-1 | 3.0.2-1 |
node-extendDebian:14 |
before 3.0.2-1 | 3.0.2-1 |
node.extendnpm |
2.0.0 up to 2.0.1 | 2.0.1 |
node-extendUbuntu:16.04:LTS |
All versions, plus listed versions 2.0.0-1 |
None known |
node-extendUbuntu:18.04:LTS |
All versions, plus listed versions 2.0.0-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-16491 is a critical vulnerability (CVSS 9.8) in Dreamerslab Node.extend, published February 1, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.72%, the 77th percentile. Fixed in node.extend 1.1.7.