CVE-2018-16490
Prototype Pollution in mpath
A prototype pollution vulnerability was found in module mpath <0.5.1 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
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A prototype pollution vulnerability was found in module mpath <0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
CVE-2018-16490- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-400, CWE-74
- Updated
- 2026-11-02
CVE List No score
A prototype pollution vulnerability was found in module mpath <0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
CVE-2018-16490- Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2019-0297 No score
A prototype pollution vulnerability was found in module mpath <0.5.1 that allows an attacker to inject arbitrary properties onto Object.prototype.
- Record
EUVD-2019-0297- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h466-j336-74wx
Prototype Pollution in mpath
Versions of mpath before 0.5.1 are vulnerable to prototype pollution. Provided certain input mpath can add or modify properties of the Object prototype. These properties will be present on all objects.
Recommendation
Update to version 0.5.1 or later.
- Record
GHSA-h466-j336-74wx- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-400, CWE-1321
- Updated
- 2026-11-02
OSVGHSA-h466-j336-74wx
Prototype Pollution in mpath
Versions of mpath before 0.5.1 are vulnerable to prototype pollution. Provided certain input mpath can add or modify properties of the Object prototype. These properties will be present on all objects.
Recommendation
Update to version 0.5.1 or later.
- Record
GHSA-h466-j336-74wx- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-1321, CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mpathnpm |
before 0.5.1 | 0.5.1 |
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-2018-16490 is a high vulnerability (CVSS 7.5) in Hackerone Mpath, published February 1, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.10%, the 65th percentile. Fixed in mpath 0.5.1.