CVE-2024-51707: WP Visual Adverts XSS Vulnerability

CVE-2024-51707 Overview

CVE-2024-51707 is a reflected Cross-Site Scripting (XSS) vulnerability affecting the WebCodin WP Visual Adverts WordPress plugin. The flaw arises from Improper Neutralization of Input During Web Page Generation [CWE-79] and impacts all versions up to and including 2.3.0. Attackers can craft malicious URLs that, when followed by an authenticated user, execute arbitrary JavaScript in the victim's browser session. The issue is network-exploitable, requires user interaction, and produces a scope change because the injected script can interact with content outside the vulnerable component's security context.

Critical Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in a victim's browser, enabling session hijacking, credential theft, and unauthorized administrative actions within affected WordPress sites.

Affected Products

WebCodin WP Visual Adverts plugin for WordPress
All versions up to and including 2.3.0
WordPress sites with the wp-visual-adverts plugin enabled

Discovery Timeline

2024-11-09 - CVE-2024-51707 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-51707

Vulnerability Analysis

The vulnerability is a reflected XSS flaw in the WP Visual Adverts plugin. User-supplied input is echoed back into the HTTP response without proper output encoding or sanitization. An attacker delivers a crafted link containing malicious JavaScript payload parameters to a target user. When the victim clicks the link, the unescaped payload renders inside the page, executing in the victim's browser under the origin of the vulnerable WordPress site.

Because the CVSS vector indicates a scope change, the injected script can affect resources beyond the immediate vulnerable component, including authenticated administrator sessions if the victim holds elevated privileges.

Root Cause

The root cause is missing or insufficient sanitization of request parameters before they are reflected into HTML responses generated by the plugin. The plugin fails to apply WordPress escaping functions such as esc_html(), esc_attr(), or wp_kses() to untrusted input before output, violating the Improper Neutralization of Input During Web Page Generation pattern described in [CWE-79].

Attack Vector

Exploitation requires user interaction. An attacker hosts or distributes a malicious URL pointing to the vulnerable WordPress site with a JavaScript payload embedded in a query parameter. When an authenticated user, typically an administrator or editor, follows the link, the payload executes in their browser context. From there, attackers can exfiltrate session cookies, perform actions on behalf of the user, or pivot to deeper site compromise. According to the EPSS data, the probability of exploitation in the wild is currently low, but reflected XSS payloads are commonly weaponized in targeted phishing campaigns against WordPress administrators.

No verified proof-of-concept code is published. See the Patchstack Vulnerability Advisory for vendor disclosure details.

Detection Methods for CVE-2024-51707

Indicators of Compromise

HTTP requests to wp-visual-adverts plugin endpoints containing URL-encoded <script> tags, javascript: URIs, or event handlers such as onerror= and onload=
Outbound browser requests to attacker-controlled domains originating from WordPress admin sessions
Unexpected modifications to WordPress user accounts, plugins, or content shortly after an admin clicked an external link

Detection Strategies

Inspect web server access logs for requests to plugin paths containing reflected payload patterns or HTML entity encoding anomalies
Deploy a Web Application Firewall (WAF) with rules targeting reflected XSS signatures on WordPress endpoints
Monitor browser Content Security Policy (CSP) violation reports for inline script execution attempts on pages served by the plugin

Monitoring Recommendations

Alert on administrator session activity originating from unusual user agents or IP addresses immediately after referer values containing the plugin URL
Track plugin version inventory across managed WordPress installations to confirm patched releases are deployed
Correlate WordPress audit logs with endpoint telemetry to identify post-exploitation behavior such as credential reuse or privilege changes

How to Mitigate CVE-2024-51707

Immediate Actions Required

Update WP Visual Adverts to a version newer than 2.3.0 if a patched release is available from WebCodin
Deactivate and remove the wp-visual-adverts plugin if no patched version is available
Audit WordPress administrator accounts for unauthorized changes and force a credential reset for privileged users
Review the Patchstack Vulnerability Advisory for the latest remediation guidance

Patch Information

At publication, the advisory indicates the vulnerability affects WP Visual Adverts versions through 2.3.0 with no fixed version identified in the NVD record. Administrators should monitor the WordPress plugin repository and the Patchstack advisory for an official patched release.

Workarounds

Disable the WP Visual Adverts plugin until a verified patch is released by WebCodin
Deploy a WAF rule set that blocks reflected XSS payloads on requests to wp-visual-adverts endpoints
Enforce a strict Content Security Policy (CSP) that disallows inline scripts and restricts allowed script sources
Require administrators to access the WordPress admin interface only from hardened, isolated browser sessions

bash

# Example: deactivate the vulnerable plugin via WP-CLI
wp plugin deactivate wp-visual-adverts
wp plugin delete wp-visual-adverts