WordPress plugin "Event Calendar WD" vulnerable to cross-site scripting


The WordPress plugin "Event Calendar WD" provided by Web-Dorado contains a stored cross-site scripting vulnerability (CWE-79).

Yuta Kitaoka of TokyoDenkiUniversity Cryptography Lab 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 5.4 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

  • Event Calendar WD version 1.1.21 and earlier


An arbitrary script may be executed on a logged-in user's web browser.

[Update the plugin]
Update the plugin according to the information provided by the developer.
Vendor Information

CWE (What is CWE?)

  1. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2018-16164

  1. JVN : JVN#75738023
  2. National Vulnerability Database (NVD) : CVE-2018-16164
Revision History

  • [2018/11/02]
      Web page was published
  • [2019/08/27]
      References : Contents were added