CVE-2018-16490
Prototype Pollution in mpath
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 66th percentile. Fixed in mpath 0.5.1.
- Severity
- 7.5 HighCVSS 3.0, NVD
- Exploit chance
- 1.10%EPSS, 66th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.5.1mpath
Description
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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mpathnpm | before 0.5.1 | 0.5.1 |
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 ListNo 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-2019-0297No 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
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.