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CVE-2019-16781

MEDIUM 5.4 CVSS 3.1
Published
December 26, 2019
Last modified
June 17, 2026
NVD status
Modified
Reported by
security-advisories@github.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

In WordPress before 5.3.1, authenticated users with lower privileges (like contributors) can inject JavaScript code in the block editor, which is executed within the dashboard. It can lead to an admin opening the affected post in the editor leading to XSS.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • WordPress WordPress — From < 5.3.1 (including) to 5.3.1 (excluding)
  • wordpress wordpress — Before 5.3.1

References

  • github.com https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-pg4x-64rh-3c9v Third Party Advisory
  • hackerone.com https://hackerone.com/reports/731301 Permissions Required, Third Party Advisory
  • seclists.org https://seclists.org/bugtraq/2020/Jan/8 Mailing List, Third Party Advisory
  • wordpress.org https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/ Release Notes, Third Party Advisory
  • wpvulndb.com https://wpvulndb.com/vulnerabilities/9976 Third Party Advisory
  • www.debian.org https://www.debian.org/security/2020/dsa-4599 Third Party Advisory
  • www.debian.org https://www.debian.org/security/2020/dsa-4677 Third Party Advisory
  • nvd.nist.gov Official NVD record