What is the CVSS score of CVE-2026-24573?

CVE-2026-24573 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Is there a patch available for CVE-2026-24573?

Yes, a patch is available for CVE-2026-24573. Update the affected software to the latest version immediately.

Themeisle Visualizer CVE-2026-24573

EUVD-2026-31099 MEDIUM

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

2026-05-20 Patchstack

GHSA-vx3g-ch3r-7568

WordPress XSS Visualizer Wordpress Plugin Themeisle

6.5

CVSS 3.1 · Vendor: Patchstack

Severity by source

Vendor (Patchstack) PRIMARY

6.5 MEDIUM

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

Primary rating from Vendor (Patchstack) · only source for this CVE.

CVSS VectorVendor: Patchstack

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Patch available

May 20, 2026 - 14:02 EUVD

Analysis Generated

May 20, 2026 - 13:34 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Stored XSS in the Themeisle Visualizer WordPress plugin (all versions before 4.0.0) allows an authenticated low-privileged user to inject persistent malicious scripts into chart or visualization content. When a victim user subsequently views the affected page, the injected script executes in their browser within a changed scope (S:C), meaning impact extends beyond the attacker's own session to other users. No public exploit code or active exploitation (CISA KEV) has been identified at time of analysis, but the low attack complexity and network-accessible vector make this straightforward to abuse on sites with open or loosely controlled contributor registration.

Technical ContextAI

The Visualizer plugin by Themeisle is a WordPress data charting and visualization tool. CWE-79 (Improper Neutralization of Input During Web Page Generation) indicates that user-supplied input - likely chart titles, labels, data fields, or configuration values - is not properly sanitized or escaped before being rendered into the HTML page. The CPE string cpe:2.3:a:themeisle:visualizer:*:*:*:*:*:*:*:* confirms all versions of this plugin across all platforms are affected until the 4.0.0 boundary. The CVSS vector component S:C (Scope Changed) is significant: it indicates the injected payload executes in the browser context of other authenticated users, not merely the attacker's own session, enabling session theft, credential harvesting, or unauthorized administrative actions against higher-privileged users who view the poisoned content.

RemediationAI

Update the Themeisle Visualizer WordPress plugin to version 4.0.0 or later, which is the vendor-confirmed patched release per the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/visualizer/vulnerability/wordpress-visualizer-plugin-4-0-0-cross-site-scripting-xss-vulnerability. If an immediate update is not feasible, restrict the ability to create or edit Visualizer charts to only the most trusted, highly privileged accounts (e.g., administrators only), reducing the pool of users who can inject stored payloads - note this may disrupt editorial workflows on multi-author sites. Additionally, deploying a web application firewall (WAF) with XSS filtering rules can provide a secondary layer of detection, though WAF bypass is possible and should not substitute for patching. Audit existing Visualizer content for suspicious script tags or encoded payloads if untrusted contributors have had access.