CVE-2026-24573: Themeisle Visualizer Stored XSS in WordPress plugin

CVE-2026-24573 · Severity: medium · CVSS 6.5 · Published 2026-05-20

Themeisle Visualizer, a popular WordPress plugin for creating charts and graphs, contains a security flaw that allows users with low-level permissions to inject malicious scripts into the website. If an administrator or visitor views the affected content, these scripts could execute in their browser, potentially leading to unauthorized actions, data theft, or website defacement. This issue is resolved in version 4.0.0.

Technologies: Themeisle Visualizer. Vendors: Themeisle.

Quick answers

Is CVE-2026-24573 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-24573 being exploited in the wild.
How severe is CVE-2026-24573?
Medium severity, with a CVSS score of 6.5, published 20 May 2026.
Which products and versions are affected?
Themeisle Visualizer before 4.0.0.
Is there a fix for CVE-2026-24573?
A patch was published on 2026-05-20: Version 4.0.0 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-24573 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-24573?
Check whether you run Themeisle Visualizer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Stored Cross-Site Scripting (XSS) vulnerability exists in the Themeisle Visualizer plugin for WordPress in versions prior to 4.0.0. The flaw stems from improper neutralization of user-supplied input during web page generation (CWE-79). An attacker with 'Contributor' or higher privileges can inject malicious JavaScript payloads into chart configurations or other metadata. These scripts are then executed in the context of a victim's browser (such as a site administrator) when they interact with or view the affected content. The vulnerability requires user interaction and has been patched in version 4.0.0.

Affected products

  • Themeisle Visualizer before 4.0.0

Timeline

  • 2025-12-22: other: Reported by Doan Dinh Van
  • 2026-05-20: patched: Version 4.0.0 released
  • 2026-05-20: advisory: Published by Patchstack and NVD

References

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