CVE-2026-66621

Deferred Deferred - Pending Action

Unauthenticated XSS in Ultimate Dashboard

Publication date: 2026-08-18

Last updated on: 2026-08-25

Assigner: Patchstack

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in MapSteps UG Ultimate Dashboard Pro allows DOM-Based XSS. This issue affects Ultimate Dashboard Pro: from n/a through 3.11.2.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-18

Last Modified

2026-08-25

Generated

2026-09-07

AI Q&A

2026-08-18

EPSS Evaluated

2026-09-06

NVD

CVE-2026-66621

EUVD

EUVD-2026-60914

Affected Vendors & Products

Vendor	Product	Version / Range
ultimate_dashboard	ultimate_dashboard	to 3.11.2 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting Ultimate Dashboard plugin versions up to and including 3.11.2. XSS allows attackers to inject malicious scripts into web pages viewed by other users without needing authentication.

Detection Guidance

To detect this vulnerability, inspect the Ultimate Dashboard plugin version. If it is <= 3.11.2, it is vulnerable. Check for XSS vectors in user inputs or URL parameters that may execute scripts.

Impact Analysis

An attacker could exploit this to steal user sessions, redirect users to malicious sites, or deface the website. Since no authentication is required, any unpatched version of the plugin is at risk of compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update Ultimate Dashboard to the latest version beyond 3.11.2 to patch the XSS vulnerability. If updating is not immediately possible, consider disabling the plugin or restricting access to trusted users only.

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