CVE-2024-51706 Overview
CVE-2024-51706 is a reflected cross-site scripting (XSS) vulnerability in the Upeksha Wisidagama UW Freelancer plugin for WordPress. The flaw stems from improper neutralization of user-supplied input during web page generation [CWE-79]. Attackers can craft malicious URLs that, when clicked by an authenticated user, execute arbitrary JavaScript in the victim's browser session. The vulnerability affects all uw-freelancer plugin versions up to and including 0.1. Exploitation requires user interaction but no prior authentication, and successful attacks can lead to session hijacking, credential theft, or unauthorized actions in the WordPress administrative context.
Critical Impact
Reflected XSS enables attackers to execute arbitrary JavaScript in a victim's browser, potentially compromising WordPress administrator sessions and enabling privilege escalation through changed scope.
Affected Products
- UW Freelancer WordPress plugin versions through 0.1
- WordPress sites running the uw-freelancer plugin by Upeksha Wisidagama
- All deployments where the plugin processes unsanitized user input parameters
Discovery Timeline
- 2024-11-09 - CVE-2024-51706 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2024-51706
Vulnerability Analysis
The vulnerability is classified as reflected cross-site scripting under [CWE-79]. The UW Freelancer plugin reflects user-controlled input back into HTTP responses without applying proper output encoding or input sanitization. When a victim loads a crafted URL containing JavaScript payloads, the browser interprets the reflected content as executable code within the trusted origin of the WordPress site.
The attack requires user interaction, meaning the victim must click a malicious link or visit an attacker-controlled page that triggers the request. The scope is changed, indicating that successful exploitation impacts resources beyond the vulnerable component itself — typically the user's browser session and any connected WordPress functionality.
The EPSS probability for this CVE is 0.259%, placing it in the 17th percentile for likelihood of exploitation. No public proof-of-concept exploits or active exploitation campaigns have been documented.
Root Cause
The root cause is missing input sanitization and output encoding in the plugin's request handling logic. User-supplied parameters are echoed back into HTML responses without escaping characters such as <, >, ", and '. WordPress provides built-in sanitization functions like esc_html(), esc_attr(), and sanitize_text_field() that the plugin fails to apply consistently before rendering data.
Attack Vector
The attack is delivered over the network with low complexity and no privileges required. An attacker constructs a URL pointing to a vulnerable endpoint within the uw-freelancer plugin, embedding a JavaScript payload in a query parameter. The attacker distributes this URL through phishing emails, malicious websites, or social engineering channels. When an authenticated WordPress user — particularly an administrator — clicks the link, the injected script executes within the WordPress origin, granting the attacker access to session cookies, CSRF tokens, and the ability to perform actions on behalf of the victim.
The vulnerability manifests in the plugin's request handling logic where parameters are reflected directly into HTML output. See the Patchstack WordPress Vulnerability Report for additional technical context.
Detection Methods for CVE-2024-51706
Indicators of Compromise
- HTTP request logs containing URL parameters with encoded or raw <script> tags, javascript: URIs, or HTML event handlers such as onerror= and onload=
- Web server access logs showing requests to uw-freelancer plugin endpoints with unusually long or obfuscated query strings
- Browser console errors or unexpected outbound requests from WordPress admin sessions to attacker-controlled domains
Detection Strategies
- Deploy a Web Application Firewall (WAF) with rules tuned to identify reflected XSS payloads in query parameters and POST bodies
- Monitor WordPress audit logs for administrator activity originating from unexpected IP addresses following link clicks
- Inspect referer headers and request patterns targeting plugin endpoints for signs of social engineering campaigns
Monitoring Recommendations
- Enable verbose logging on the WordPress installation and forward logs to a centralized SIEM for correlation
- Alert on outbound requests from administrator browsers to newly observed or low-reputation domains
- Track plugin inventory across WordPress fleets to identify installations of vulnerable uw-freelancer versions
How to Mitigate CVE-2024-51706
Immediate Actions Required
- Deactivate and remove the UW Freelancer plugin from all WordPress installations until a patched version is released
- Audit WordPress administrator accounts for unauthorized changes, including new users, modified roles, and injected content
- Rotate WordPress administrator credentials and invalidate active sessions if exploitation is suspected
Patch Information
At the time of publication, no vendor patch is available. The vulnerability affects all versions through 0.1, and no fixed release has been identified in the Patchstack advisory. Site operators should monitor the WordPress plugin repository for updates and apply them as soon as they become available.
Workarounds
- Remove the uw-freelancer plugin entirely as the most reliable mitigation given the absence of a vendor fix
- Configure a WAF to block requests containing common XSS payloads targeting the plugin's endpoints
- Restrict WordPress administrator access to trusted IP ranges and enforce multi-factor authentication to limit the impact of session compromise
- Educate administrators to avoid clicking unsolicited links to the WordPress site, particularly while authenticated
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
