Vulnerability record · CVE-2019-16931 · published 3 October 2019

CVE-2019-16931: Themeisle visualizer cross-site scripting vulnerability

Themeisle · Visualizer

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.

6.1 CVSS 3.1 Medium EPSS 3.3% · top 11.8% CWE-79 · Cross-site scripting

6.1CVSS 3.1 base score, v2 4.3

3.3%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 4 tagged exploit

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Visualizer Themeisle

References

Link	Tags
https://nathandavison.com/blog/wordpress-visualizer-plugin-xss-and-ssrf	ExploitThird Party Advisory
https://wordpress.org/plugins/visualizer/#developers	ProductRelease Notes
https://wpvulndb.com/vulnerabilities/9893	ExploitThird Party Advisory
https://nathandavison.com/blog/wordpress-visualizer-plugin-xss-and-ssrf	ExploitThird Party Advisory
https://wordpress.org/plugins/visualizer/#developers	ProductRelease Notes
https://wpvulndb.com/vulnerabilities/9893	ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2019-16932Themeisle visualizer server-side request forgery (ssrf) vulnerabilityA blind SSRF vulnerability exists in the Visualizer plugin before 3.3.1 for WordPress via wp-json/visualizer/v1/upload-data.EPSS 39%30 Sep 2019 8.8CVE-2024-35736Themeisle visualizer sql injection vulnerabilityImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Themeisle Visualizer.This issue affects Visuali…EPSS 0.44%8 Jun 2024 8.8CVE-2022-2444Themeisle visualizer deserialization of untrusted data vulnerabilityThe Visualizer: Tables and Charts Manager for WordPress plugin for WordPress is vulnerable to deserialization of untrusted input via the 'remote_data…EPSS 2.3%18 Jul 2022 6.1CVE-2024-27958Themeisle visualizer cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Themeisle Visualizer allows Reflected XSS.This …EPSS 0.45%17 Mar 2024 5.4CVE-2023-23708Themeisle visualizer cross-site scripting vulnerabilityAuth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in Themeisle Visualizer: Tables and Charts Manager for WordPress plugin <= 3.9.4…EPSS 0.42%3 May 2023 5.4CVE-2022-46848Themeisle visualizer cross-site scripting vulnerabilityAuth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in Themeisle Visualizer: Tables and Charts Manager for WordPress plugin <= 3.9.1…EPSS 0.51%28 Mar 2023 6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed14 May 2026 6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed23 Jun 2025

Source: NIST National Vulnerability Database (record CVE-2019-16931), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.