WordPress plugin "Welcart e-Commerce" vulnerable to directory traversal


WordPress plugin "Welcart e-Commerce" provided by Collne Inc. contains a directory traversal vulnerability (CWE-22).

Masato Ikeda of Mitsui Bussan Secure Directions, Inc. and Takeshi Suzuki reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

Collne Inc.
  • Welcart e-Commerce versions 2.6.0 to 2.8.5


Arbitrary files on the server may be viewed by a remote attacker.

[Update the plugin]
Update the plugin according to the information provided by the developer.
The developer has released the following version that addresses the vulnerability.

* Welcart e-Commerce 2.8.6 or later
Vendor Information

Collne Inc.
CWE (What is CWE?)

  1. Path Traversal(CWE-22) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2022-4140

  1. JVN : JVN#31073333
  2. National Vulnerability Database (NVD) : CVE-2022-4140
  3. Related document : Welcart e-Commerce < 2.8.5 - Unauthenticated Arbitrary File Access
Revision History

  • [2023/01/17]
      Web page was published