WordPress security changelog
MEDIUM CVE-2019-16931 Modified

Visualizer: Cross-site scripting

Visualizer is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 6.1 CVSS · cve@mitre.org
NVD score 6.1 CVSS 3.1 · nvd@nist.gov
Component
Visualizer
Plugin slug
visualizer
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Oct 03, 2019
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Oct 03, 2019 and is one of 13 known issues for this plugin.

Patch or disable the affected component.

Update Visualizer to a release outside the affected range, or disable and remove it until a fixed version is available.

Technical description

A stored XSS vulnerability in the Visualizer plugin 3.3.0 for WordPress allows an unauthenticated attacker to execute arbitrary JavaScript when an admin or other privileged user edits the chart via the admin dashboard. This occurs because classes/Visualizer/Gutenberg/Block.php registers wp-json/visualizer/v1/update-chart with no access control, and classes/Visualizer/Render/Page/Data.php lacks output sanitization.

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

Primary and upstream sources