{"id":"UBUNTU-CVE-2019-16781","details":"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.","modified":"2025-10-24T04:47:53Z","published":"2019-12-26T17:15:00Z","upstream":["CVE-2019-16781"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-16781"},{"type":"REPORT","url":"https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-pg4x-64rh-3c9v"},{"type":"REPORT","url":"https://hackerone.com/reports/731301"},{"type":"REPORT","url":"https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/"},{"type":"REPORT","url":"https://wpvulndb.com/vulnerabilities/9976"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-16781"}],"affected":[{"package":{"name":"wordpress","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/wordpress@4.4.2+dfsg-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3+dfsg-1","4.3.1+dfsg-1","4.4+dfsg-1","4.4.1+dfsg-1","4.4.2+dfsg-1","4.4.2+dfsg-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.4.2+dfsg-1ubuntu1","binary_name":"wordpress"},{"binary_version":"4.4.2+dfsg-1ubuntu1","binary_name":"wordpress-l10n"},{"binary_version":"4.4.2+dfsg-1ubuntu1","binary_name":"wordpress-theme-twentyfifteen"},{"binary_version":"4.4.2+dfsg-1ubuntu1","binary_name":"wordpress-theme-twentyfourteen"},{"binary_version":"4.4.2+dfsg-1ubuntu1","binary_name":"wordpress-theme-twentysixteen"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16781.json"}},{"package":{"name":"wordpress","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/wordpress@4.9.5+dfsg1-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.2+dfsg-2","4.8.3+dfsg-1","4.9.1+dfsg-1","4.9.2+dfsg-1","4.9.4+dfsg-1","4.9.5+dfsg1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.9.5+dfsg1-1","binary_name":"wordpress"},{"binary_version":"4.9.5+dfsg1-1","binary_name":"wordpress-l10n"},{"binary_version":"4.9.5+dfsg1-1","binary_name":"wordpress-theme-twentyfifteen"},{"binary_version":"4.9.5+dfsg1-1","binary_name":"wordpress-theme-twentyseventeen"},{"binary_version":"4.9.5+dfsg1-1","binary_name":"wordpress-theme-twentysixteen"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16781.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}