CVE-2026-66457
Received Received - Intake

Unauthenticated XSS in Events Manager

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in Events Manager <= 7.4.1 versions.

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Meta Information

Published
2026-08-06
Last Modified
2026-08-06
Generated
2026-08-06
AI Q&A
2026-08-06
EPSS Evaluated
N/A
NVD
CVE-2026-66457
EUVD
EUVD-2026-53886

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
events_manager events_manager to 7.4.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting Events Manager plugin versions up to and including 7.4.1. XSS allows attackers to inject malicious scripts into web pages viewed by other users without needing authentication.

Detection Guidance

To detect this XSS vulnerability in Events Manager <= 7.4.1, inspect web application inputs for unsanitized user-supplied data. Check for reflected or stored XSS by testing input fields with basic XSS payloads like <script>alert(1)</script>. Review server responses for script execution.

Impact Analysis

An attacker could exploit this to steal user sessions, redirect users to malicious sites, or deface the website. Users with admin privileges could have their accounts compromised, leading to full site takeover.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for protecting user data. Organizations may face fines and legal consequences if user data is compromised through this XSS flaw.

Mitigation Strategies

Immediately update Events Manager to the latest version beyond 7.4.1. If an update is unavailable, disable the plugin temporarily. Implement input validation and output encoding for all user inputs. Use a web application firewall to filter malicious scripts.

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