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Cross-site Scripting (XSS)Weakness · CWE-79

CVE-2026-24573

MEDIUM · 6.5 CVSS v3.1 Published 2026-05-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Themeisle Visualizer allows Stored XSS. This issue affects Visualizer: from n/a before 4.0.0.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Stored Cross-site Scripting (XSS) vulnerability in the Themeisle Visualizer plugin allows malicious JavaScript to be persisted and executed when other users view the affected content. The vulnerability stems from improper input sanitization during web page generation, likely in data visualization rendering where user-supplied data is displayed without proper encoding.

MitigationUpgrade to Visualizer version 4.0.0 or later which contains the security fix. Until then, restrict contributor/author-level access and review existing content for suspicious script injections.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check Visualizer plugin version
    Navigate to WordPress admin > Plugins > Installed Plugins, locate 'Visualizer' in the list, and note the version number displayed below the plugin name
    Affected if The installed version is lower than 4.0.0 (the fixed version)
  2. Confirm plugin is active
    In the same plugins list, verify the Visualizer plugin shows as 'Active' (not deactivated or removed)
    Affected if The plugin is installed and active with a vulnerable version
  3. Identify users with visualization creation access
    Go to Users in WordPress admin, review user roles. Users with Editor, Author, or Contributor roles can typically create or modify Visualizer charts. Check if any untrusted or low-privilege users exist with these roles
    Affected if Untrusted or low-privilege users (such as Contributors, Authors, or subscribers with custom capabilities) have permission to create or edit charts
  4. Inspect chart data for malicious payloads
    Access your WordPress database (via phpMyAdmin or command line), query the posts table or any Visualizer-specific table for stored chart data. Look for script tags, javascript: URIs, or encoded XSS payloads in chart configuration or data fields
    Affected if Chart entries contain unsanitized JavaScript code or XSS payloads in visualization data fields

You are affected if the Visualizer plugin is active at any version before 4.0.0 and untrusted authenticated users can create or modify chart visualizations, as the injected malicious script would be stored and executed for other users viewing those charts.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to Visualizer version 4.0.0 or later which contains the security fix. Until then, restrict contributor/author-level access and review existing content for suspicious script injections.

Recommended fix Moderate confidence

Version 4.0.0 or later of Themeisle Visualizer plugin

  1. Check the currently installed version of the Themeisle Visualizer plugin
  2. If the installed version is before 4.0.0, plan an upgrade to version 4.0.0 or later
  3. Before upgrading in a production environment, test the upgrade in a staging environment to ensure compatibility
  4. Backup the WordPress site before performing the upgrade
  5. Upgrade the Visualizer plugin to the latest available version (recommended: 4.0.0 or newer)
  6. Verify the plugin functions correctly after upgrade
  7. Test that the XSS vulnerability is no longer exploitable
Caveat Review plugin changelog for any breaking changes between your current version and 4.0.0; some features may have been modified or deprecated

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-24573 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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