WordPress Plugin "Browser and Operating System Finder" vulnerable to cross-site request forgery


WordPress Plugin "Browser and Operating System Finder" provided by Aftab Muni contains a cross-site request forgery vulnerability (CWE-352).

imai shinpei of Cryptography Laboratory,Department of Information and Communication Engineering,Tokyo Denki University reported and coordinated with the developer to fix this vulnerability.
After coordination was completed, this case was reported to IPA, and JPCERT/CC coordinated with the developer for the publication under Information Security Early Warning Partnership.
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

Aftab Muni
  • Browser and Operating System Finder versions prior to 1.2


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

Aftab Muni
CWE (What is CWE?)

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

  1. CVE-2021-20851

  1. JVN : JVN#93562098
Revision History

  • [2021/11/25]
      Web page was published