Medium severity · published Jul 24, 2026
CVE-2026-15653
Visualizer <= 4.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'backend-title' Parameter
6.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VT
Visualizer – Tables & Charts Manager with Built-in AI Generator · themeisle
through 4.0.5 · source: vendor
Affected product
VT
Visualizer – Tables & Charts Manager with Built-in AI Generator
themeisle
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15653
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15653
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/visualizer/tags/4.0.5/classes/Visualizer/Module/Chart.php#L553
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/visualizer/tags/4.0.5/classes/Visualizer/Module/Chart.php#L826
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/visualizer/tags/4.0.5/classes/Visualizer/Render/Page/Data.php#L96
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset?reponame=&old=3619025%40visualizer&new=3619025%40visualizer
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/914554fd-1525-4925-bce4-2df4a8df5dbf?source=cve
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Visualizer <= 4.0.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via /visualizer/v1/action/{chart}/{type}/ REST Endpoint