CVE-2024-51763 Overview
CVE-2024-51763 is a reflected Cross-Site Scripting (XSS) vulnerability in the biplob018 Team Showcase and Slider – Team Members Builder WordPress plugin (team-showcase-ultimate). The flaw affects all versions up to and including 1.3. It stems from improper neutralization of user-supplied input during web page generation [CWE-79]. An attacker can craft a malicious URL that, when clicked by an authenticated or unauthenticated user, executes arbitrary JavaScript in the victim's browser under the context of the vulnerable site.
Critical Impact
Successful exploitation allows attackers to execute arbitrary script in a victim's browser, enabling session theft, credential harvesting, and defacement across the WordPress site.
Affected Products
- WordPress plugin: Team Showcase and Slider – Team Members Builder (team-showcase-ultimate)
- Vendor: biplob018
- Affected versions: all versions through 1.3
Discovery Timeline
- 2024-11-09 - CVE-2024-51763 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-51763
Vulnerability Analysis
The vulnerability is a reflected XSS issue in the Team Showcase and Slider plugin for WordPress. The plugin reflects user-controlled input from HTTP request parameters directly into rendered web pages without adequate encoding or sanitization. When a victim visits a crafted link, the injected payload is echoed into the response and executed by the browser.
Reflected XSS in a WordPress plugin can be leveraged to hijack administrator sessions, perform actions on behalf of a logged-in user, exfiltrate cookies, and deliver secondary payloads such as malicious redirects or drive-by downloads. The scope-changed CVSS vector indicates that a successful attack impacts resources beyond the vulnerable component itself, such as the authenticated user's browser session.
Root Cause
The root cause is missing output encoding and input sanitization within the plugin's request-handling routines. Input received from HTTP parameters is inserted into HTML output without applying WordPress escaping functions such as esc_html(), esc_attr(), or wp_kses(). This allows script content in the request to be rendered as executable markup.
Attack Vector
Exploitation requires user interaction. An attacker crafts a URL containing a JavaScript payload in a vulnerable parameter and delivers it via phishing, forum posts, or social engineering. When a visitor with an active WordPress session, especially an administrator, opens the link, the script executes in the site's origin. No authentication is required to construct the malicious request. Refer to the Patchstack Vulnerability Report for the technical advisory.
Detection Methods for CVE-2024-51763
Indicators of Compromise
- Web server access logs containing requests to plugin endpoints with <script>, javascript:, onerror=, or URL-encoded equivalents such as %3Cscript%3E in query parameters.
- Referrers originating from untrusted domains or shortened URL services pointing to plugin-related URLs.
- Unexpected outbound requests from administrator browsers to attacker-controlled hosts shortly after visiting the site.
Detection Strategies
- Deploy a Web Application Firewall (WAF) rule that inspects query strings for common XSS payload patterns targeting team-showcase-ultimate endpoints.
- Review WordPress access logs for anomalous parameter values containing HTML or JavaScript syntax.
- Correlate administrator authentication events with suspicious outbound HTTP traffic that could indicate cookie exfiltration.
Monitoring Recommendations
- Enable verbose HTTP logging on the WordPress front-end and forward logs to a centralized analytics platform for pattern matching.
- Monitor for privilege changes, new administrator accounts, or unexpected plugin/theme modifications following suspicious traffic.
- Alert on Content Security Policy (CSP) violation reports that indicate blocked inline script execution.
How to Mitigate CVE-2024-51763
Immediate Actions Required
- Update the Team Showcase and Slider – Team Members Builder plugin beyond version 1.3 once a patched release is available from the vendor.
- If no fixed version is available, deactivate and remove the plugin from all WordPress instances.
- Force password resets for administrator accounts and invalidate active sessions if suspicious traffic has been observed.
Patch Information
At the time of publication, the affected range covers all versions through 1.3. Consult the Patchstack Vulnerability Report for the latest fix status and vendor guidance.
Workarounds
- Deploy WAF signatures that block reflected XSS payloads in requests targeting the plugin's endpoints and parameters.
- Apply a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.
- Restrict administrative access to trusted networks and require multi-factor authentication to reduce the impact of a hijacked session.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
