PT-2019-5215 · WordPress · Wordpress

Simon Scannell · Published 2019-09-11 · Updated 2023-01-19 · CVE-2019-16781

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions WordPress versions prior to 5.3.1

Description The issue is related to a Cross-Site Scripting (XSS) error in the block editor of the WordPress content management system. This error can be exploited by authenticated users with lower privileges, such as contributors, who can inject JavaScript code in the block editor. The injected code is executed within the dashboard, which can lead to an admin opening the affected post in the editor, resulting in an XSS attack. This can allow a remote attacker to compromise the integrity of the data.

Recommendations For versions prior to 5.3.1, update to version 5.3.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the block editor for lower-privileged users until a patch is applied.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BDU:2020-01944

CVE-2019-16781

DSA-4599-1

DSA-4677-1

GHSA-PG4X-64RH-3C9V

Affected Products

Wordpress

References · 18

• https://cve.org/CVERecord?id=CVE-2019-16781 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-16781 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-16781 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-16781 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-16781 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-01944 · Security Note
• https://osv.dev/vulnerability/DSA-4599-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-16781 · Vendor Advisory
• https://debian.org/security/2020/dsa-4677 · Vendor Advisory
• https://debian.org/security/2020/dsa-4599 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4677-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-16781 · Vendor Advisory
• https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-pg4x-64rh-3c9v · Note
• https://seclists.org/bugtraq/2020/Jan/8 · Note
• https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release · Note