WordPress plugin "Welcart e-Commerce" vulnerable to session management


WordPress plugin "Welcart e-Commerce" provided by Collne Inc. contains a vulnerability in session management.

Gen Sato of TRADE WORKS Co.,Ltd. Security Dept. 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 6.5 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 6.4 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Collne Inc.
  • Welcart e-Commerce prior to v1.8.3


A remote attacker who knows a user's e-mail address may log in with the user privilege. As a result, arbitrary operations may be conducted.

[Update the Software]
Update to the latest version according to the information provided by the developer.
Vendor Information

Collne Inc.
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-4828

  1. JVN : JVN#61578437
  2. National Vulnerability Database (NVD) : CVE-2016-4828
Revision History

  • [2016/06/24]
      Web page was published
      References : Content was added