XSS in Themeisle Visualizer
CVE-2019-16931
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.033 (88.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/visualizer/ (Product, Release Notes)
- wpvulndb.com/vulnerabilities/9893 (Exploit, Third Party Advisory)
- nathandavison.com/blog/wordpress-visualizer-plugin-xss-and-ssrf (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16931?
- CVE-2019-16931 is a medium-severity vulnerability in Themeisle Visualizer, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-03.
- How severe is CVE-2019-16931?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-16931 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.