CVE-2019-16931

Name: CVE-2019-16931
Creator: NVD / NIST
Published: 2019-10-03T19:15:09.77+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 3.34%

Last modified Jun 17, 2026

CVE-2019-16931 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 3.34% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

3.34%

87.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Themeisle	Visualizer	<= 3.3.0

References

https://nathandavison.com/blog/wordpress-visualizer-plugin-xss-and-ssrfExploit, Third Party Advisory
https://wordpress.org/plugins/visualizer/#developersProduct, Release Notes
https://wpvulndb.com/vulnerabilities/9893Exploit, Third Party Advisory
https://nathandavison.com/blog/wordpress-visualizer-plugin-xss-and-ssrfExploit, Third Party Advisory
https://wordpress.org/plugins/visualizer/#developersProduct, Release Notes
https://wpvulndb.com/vulnerabilities/9893Exploit, Third Party Advisory

Timeline

Published: Oct 3, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-16931?

How severe is CVE-2019-16931?

CVE-2019-16931 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 3.34% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16931?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-16931?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST