WordPress Plugin "Software License Manager" vulnerable to cross-site request forgery


WordPress Plugin "Software License Manager" provided by Tips and Tricks HQ contains a cross-site request forgery vulnerability (CWE-352).

Koken Tokuda of Cryptography Laboratory, Department of Information and Communication Engineering, Tokyo Denki University. reported this vulnerability to the developer and coordinated on his own.
After coordination was completed, JPCERT/CC published respective advisories in order to notify users of this vulnerability.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Tips and Tricks HQ
  • Software License Manager versions prior to 4.4.6


If a user with an administrative privilege views a malicious page while logged in, unintended operations may be performed.

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

Tips and Tricks HQ
CWE (What is CWE?)

  1. Cross-Site Request Forgery(CWE-352) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2021-20782

  1. JVN : JVN#89054582
Revision History

  • [2021/07/08]
      Web page was published