CVE-2024-49650 Overview
CVE-2024-49650 is a reflected cross-site scripting (XSS) vulnerability in the Xarbo BuddyPress Greeting Message plugin (bp-greeting-message) for WordPress. The flaw stems from improper neutralization of user-controlled input during web page generation [CWE-79]. All plugin versions up to and including 1.0.3 are affected. An unauthenticated attacker can craft a malicious URL that, when clicked by a victim, executes arbitrary JavaScript in the victim's browser session within the context of the vulnerable site.
Critical Impact
Successful exploitation enables session theft, credential harvesting, and forced actions performed under the victim's identity on the affected WordPress site.
Affected Products
- Xarbo BuddyPress Greeting Message plugin for WordPress
- All versions from n/a through 1.0.3
- WordPress sites running BuddyPress with this plugin installed
Discovery Timeline
- 2024-10-29 - CVE-2024-49650 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2024-49650
Vulnerability Analysis
The vulnerability is a reflected XSS condition in the bp-greeting-message plugin. The plugin echoes attacker-supplied request parameters back into rendered HTML without proper output encoding or input sanitization. Because the payload reflects directly into the response, an attacker only needs to convince a victim to load a crafted URL.
The attack vector is network-based and requires user interaction. The scope is changed, meaning the injected script can affect resources beyond the vulnerable component, such as the broader WordPress session context. Impact spans confidentiality, integrity, and availability at a limited level.
WordPress sites that grant elevated capabilities to logged-in users are at higher risk. An attacker targeting an administrator can leverage the XSS to perform privileged actions through the admin's authenticated session.
Root Cause
The plugin fails to apply WordPress sanitization helpers such as esc_html(), esc_attr(), or sanitize_text_field() to request parameters before rendering them in HTML output. This omission allows raw HTML and JavaScript to be reflected in the response.
Attack Vector
An attacker crafts a URL containing a JavaScript payload in a vulnerable parameter handled by the plugin. The attacker delivers the URL through phishing, forum posts, or other social channels. When a victim visits the link on the targeted WordPress site, the browser executes the injected script under the site's origin. The script can read cookies that lack HttpOnly, exfiltrate page content, or issue authenticated requests on the victim's behalf.
No verified public exploit or proof-of-concept code is available at the time of writing. See the Patchstack Vulnerability Report for additional technical context.
Detection Methods for CVE-2024-49650
Indicators of Compromise
- Web server access logs showing requests to bp-greeting-message endpoints containing URL-encoded <script>, onerror=, onload=, or javascript: strings
- Referrer headers from external sites pointing to crafted plugin URLs with suspicious query parameters
- Unexpected outbound requests from user browsers to attacker-controlled domains following visits to plugin pages
Detection Strategies
- Inspect WordPress request logs for query parameters containing HTML tags or JavaScript event handlers targeting plugin paths
- Deploy a web application firewall ruleset that flags reflected XSS patterns in requests to /wp-content/plugins/bp-greeting-message/
- Review browser console errors and Content Security Policy (CSP) violation reports for blocked inline script execution
Monitoring Recommendations
- Enable verbose HTTP request logging on the WordPress host and forward logs to a centralized analytics platform for pattern matching
- Alert on administrator account activity that immediately follows a click on an externally referred URL containing plugin parameters
- Track plugin version inventory across managed WordPress sites and alert on any installation of bp-greeting-message at version 1.0.3 or earlier
How to Mitigate CVE-2024-49650
Immediate Actions Required
- Disable or remove the bp-greeting-message plugin from all WordPress sites until a patched version is confirmed available
- Audit administrator and editor accounts for recent suspicious activity that may indicate session hijacking through XSS
- Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins
Patch Information
No vendor-supplied patch is referenced in the available advisory data. Affected versions are listed as n/a through 1.0.3. Site operators should consult the Patchstack Vulnerability Report for the latest remediation guidance and to monitor for an official fix.
Workarounds
- Uninstall the plugin and replace it with a maintained BuddyPress greeting alternative
- Place the WordPress site behind a web application firewall configured with reflected XSS signatures
- Set the HttpOnly and Secure flags on session cookies to reduce the impact of script-based cookie theft
# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate bp-greeting-message
wp plugin delete bp-greeting-message
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
