CVE-2024-50532: Events Manager Pro Extended XSS Flaw

CVE-2024-50532 Overview

CVE-2024-50532 is a reflected Cross-Site Scripting (XSS) vulnerability in the Jerin K Alexander Events Manager Pro – extended WordPress plugin. The flaw affects all versions up to and including 0.1. It results from improper neutralization of user-supplied input during web page generation [CWE-79].

The vulnerability is exploited over the network, requires no privileges, and depends on user interaction such as clicking a crafted link. A successful attack runs attacker-controlled JavaScript in the victim's browser session against the targeted WordPress site.

Critical Impact

Attackers can execute arbitrary JavaScript in an authenticated administrator's browser, leading to session theft, account takeover, or further compromise of the WordPress site.

Affected Products

• Jerin K Alexander Events Manager Pro – extended (events-manager-pro-extended)
• All plugin versions from n/a through <= 0.1
• WordPress installations using the affected plugin

Discovery Timeline

• 2024-11-19 - CVE-2024-50532 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2024-50532

Vulnerability Analysis

The plugin fails to sanitize and escape user-controlled input before reflecting it back in HTTP responses. According to the Patchstack advisory, the issue chains a Cross-Site Request Forgery (CSRF) weakness with reflected XSS, meaning the attacker can trigger the reflected payload through a forged request rather than requiring the victim to manually submit data.

The vulnerability falls under CWE-79, Improper Neutralization of Input During Web Page Generation. Because the scope is changed during exploitation, malicious script executes in the security context of the vulnerable WordPress site, gaining access to cookies, session tokens, and any data accessible to the victim user.

Root Cause

The plugin echoes request parameters into HTML output without applying WordPress sanitization functions such as esc_html(), esc_attr(), or wp_kses(). Combined with missing CSRF nonce validation on the affected endpoint, an attacker can craft a malicious URL or form that delivers JavaScript payloads to an authenticated user's browser.

Attack Vector

An attacker hosts a malicious page or sends a phishing link to a WordPress administrator. When the administrator visits the link while authenticated, the browser issues a request to the vulnerable plugin endpoint. The plugin reflects the attacker's payload into the response, where it executes in the admin's session and can perform actions such as creating new administrator accounts or injecting backdoors.

No verified public exploit code is available. See the Patchstack Vulnerability Advisory for additional technical detail.

Detection Methods for CVE-2024-50532

Indicators of Compromise

• Unexpected <script> tags or JavaScript event handlers in WordPress access logs targeting plugin endpoints
• Outbound requests from administrator browsers to unknown domains shortly after visiting external links
• New administrator accounts, modified user roles, or unfamiliar plugins installed without authorization
• HTTP referrers from external sites preceding administrative actions in WordPress audit logs

Detection Strategies

• Inspect web server logs for query strings containing URL-encoded HTML tags, javascript: schemes, or common XSS payload patterns targeting events-manager-pro-extended paths
• Deploy a Web Application Firewall (WAF) ruleset that flags reflected XSS patterns against WordPress plugin endpoints
• Compare installed WordPress plugin versions against vulnerable ranges and alert when events-manager-pro-extended version <= 0.1 is present

Monitoring Recommendations

• Enable WordPress audit logging to track administrator actions, plugin installations, and user role changes
• Forward web server and WordPress logs to a centralized SIEM for correlation across user sessions
• Monitor browser-initiated requests from privileged users for anomalous referrers or POST bodies

How to Mitigate CVE-2024-50532

Immediate Actions Required

• Deactivate and remove the Events Manager Pro – extended plugin until a patched version is released by the maintainer
• Force a password reset and session invalidation for all WordPress administrator accounts
• Audit the WordPress installation for unauthorized users, plugins, themes, and modified core files

Patch Information

No official patched version is listed in the advisory. The vulnerability affects the plugin from initial release through version 0.1, and no fixed release has been published. Site owners should remove the plugin or apply virtual patching via a WAF until the vendor provides an update.

Workarounds

• Apply WAF rules from providers such as Patchstack that virtually patch the reflected XSS and CSRF chain
• Restrict access to the WordPress admin interface using IP allowlists or VPN-only access
• Enforce browser-side protections including a strict Content-Security-Policy header that disallows inline scripts
• Replace the plugin with an actively maintained events management alternative

# Configuration example: nginx Content-Security-Policy header for WordPress
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'self'; base-uri 'self';" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "SAMEORIGIN" always;