public Module on Node.js path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in public Module on Node.js (JavaScript Library) (affected version not known). It has been declared as critical. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

public node module suffers from a Path Traversal vulnerability due to lack of validation of filePath, which allows a malicious user to read content of any file with known path.

The bug was discovered 04/21/2018. The weakness was disclosed 06/07/2018 (Website). The advisory is shared for download at This vulnerability was named CVE-2018-3731 since 12/28/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability was handled as a non-public zero-day exploit for at least 46 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.




CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Path traversal
ATT&CK: T1006

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


12/28/2017 🔍
04/21/2018 +114 days 🔍
06/06/2018 +45 days 🔍
06/07/2018 +1 days 🔍
06/07/2018 +0 days 🔍
02/17/2020 +620 days 🔍


Status: Not defined

CVE: CVE-2018-3731 (🔍)


Created: 06/07/2018 10:49 AM
Updated: 02/17/2020 07:22 AM
Changes: 06/07/2018 10:49 AM (55), 02/17/2020 07:22 AM (1)
Complete: 🔍


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