CVE-2019-16781

5.4 mediumEPSS 1.6%

Medium (5.4). EPSS 1.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2019-12-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

debian:debian_linux
wordpress:wordpress

References

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-pg4x-64rh-3c9v
https://hackerone.com/reports/731301
https://seclists.org/bugtraq/2020/Jan/8
https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/
https://wpvulndb.com/vulnerabilities/9976

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