What’s Vulnerable › Vulnerabilities

CVE-2026-15653: Visualizer <= 4.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'backend-title' Parameter

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-24 · updated 2026-07-24
• Weakness: CWE-79

Description

The Visualizer – Tables & Charts Manager with Built-in AI Generator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'backend-title' parameter in all versions up to, and including, 4.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• themeisle Visualizer – Tables & Charts Manager with Built-in AI Generator: through 4.0.5

References

• https://plugins.trac.wordpress.org/browser/visualizer/tags/4.0.5/classes/Visualizer/Module/Chart.php#L553
• https://plugins.trac.wordpress.org/browser/visualizer/tags/4.0.5/classes/Visualizer/Module/Chart.php#L826
• https://plugins.trac.wordpress.org/browser/visualizer/tags/4.0.5/classes/Visualizer/Render/Page/Data.php#L96
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3619025%40visualizer&new=3619025%40visualizer
• https://www.wordfence.com/threat-intel/vulnerabilities/id/914554fd-1525-4925-bce4-2df4a8df5dbf?source=cve

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