WordPress plugin "YOP Poll" vulnerable to cross-site scripting


The WordPress plugin "YOP Poll" contains a stored cross-site scripting (CWE-79) vulnerability.

Sho Ueshima, Takashi Honda, Tsuyoshi Ogawa and Minaho Umehara of SIE Co.,Ltd. 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

  • YOP Poll versions prior to 5.8.1


An arbitrary script may be executed on the web browser of a user accessing the poll generated by the application.

[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-2017-2127

  1. JVN : JVN#55294532
  2. National Vulnerability Database (NVD) : CVE-2017-2127
Revision History

  • [2017/03/23]
      Web page was published
      References : Content was added