CVE-2024-54395: Increase Sociability XSS Vulnerability

CVE-2024-54395 Overview

CVE-2024-54395 is a reflected Cross-Site Scripting (XSS) vulnerability in the Increase Sociability WordPress plugin developed by preblogging. The flaw affects all versions up to and including 1.3.0. The plugin fails to properly neutralize user-supplied input during web page generation, allowing attackers to inject arbitrary JavaScript that executes in a victim's browser.

The vulnerability is tracked under CWE-79 and requires user interaction to trigger. An attacker must convince a victim to click a crafted link containing the malicious payload.

Critical Impact
Successful exploitation allows attackers to execute arbitrary script in the victim's browser session, potentially leading to session hijacking, credential theft, or actions performed on behalf of authenticated WordPress users including administrators.

Affected Products

preblogging Increase Sociability WordPress plugin (increase-sociability)
All versions from n/a through 1.3.0
WordPress installations with the vulnerable plugin enabled

Discovery Timeline

2024-12-16 - CVE-2024-54395 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2024-54395

Vulnerability Analysis

The Increase Sociability plugin processes request parameters and reflects their values back into HTML responses without sufficient output encoding. When a victim loads a URL containing a crafted payload, the browser interprets the injected content as executable JavaScript rather than data. The vulnerability is classified as reflected XSS, meaning the payload is not stored on the server but delivered through a one-time crafted request.

The Patchstack advisory associates this issue with a Cross-Site Request Forgery (CSRF) vector, suggesting the reflected payload reaches the vulnerable sink through a request that lacks anti-CSRF protections. This composition allows an attacker to chain CSRF with XSS to execute script in the context of authenticated administrators who visit the malicious link.

The EPSS probability for CVE-2024-54395 is 0.144%, indicating low observed exploitation activity, though the absence of an authentication requirement keeps the attack surface broad.

Root Cause

The root cause is improper neutralization of input during web page generation. The plugin includes request data in rendered HTML without applying context-appropriate encoding functions such as esc_html(), esc_attr(), or wp_kses(). As a result, characters such as <, >, and " retain their HTML-significant meaning when echoed back to the browser.

Attack Vector

The attack is delivered over the network and requires user interaction. An attacker crafts a URL containing a malicious script payload in a vulnerable parameter and delivers it via phishing, social media, or third-party websites. When an authenticated WordPress user clicks the link, the injected script executes within the WordPress origin. The attacker can then read cookies accessible to JavaScript, exfiltrate nonces, or issue authenticated requests against the site's admin interface.

No verified exploit code is publicly available. The vulnerability mechanism is described in the Patchstack WordPress Vulnerability database entry.

Detection Methods for CVE-2024-54395

Indicators of Compromise

HTTP requests to Increase Sociability plugin endpoints containing URL-encoded <script>, javascript:, or onerror= substrings
Referer headers from external domains pointing to plugin URLs with unusually long query strings
Unexpected outbound requests from WordPress admin sessions to attacker-controlled domains
Browser console errors or content security policy violations originating from plugin-rendered pages

Detection Strategies

Inspect web server access logs for requests targeting increase-sociability plugin paths with suspicious query parameters
Deploy web application firewall rules that match common XSS payload patterns against plugin request URIs
Monitor WordPress audit logs for administrative actions originating shortly after a user clicked an external link
Correlate authentication events with anomalous referer headers to identify potential phishing-driven exploitation

Monitoring Recommendations

Enable verbose logging on the WordPress reverse proxy and forward events to a centralized analytics platform
Alert on HTTP 200 responses where reflected query parameters contain HTML metacharacters
Track administrator session activity for indicators of session token reuse from new IP addresses
Continuously inventory installed plugin versions and flag any host still running Increase Sociability <= 1.3.0

How to Mitigate CVE-2024-54395

Immediate Actions Required

Deactivate and remove the Increase Sociability plugin until a patched version is available
Audit administrator accounts for unauthorized changes, new users, or modified roles
Rotate WordPress administrator passwords and invalidate active sessions across all privileged accounts
Enforce a Content Security Policy (CSP) that restricts inline script execution on WordPress origins

Patch Information

No vendor-supplied patched version is referenced in the available advisory data. The vulnerability affects Increase Sociability through version 1.3.0. Administrators should consult the Patchstack advisory for the most current remediation guidance and monitor the WordPress plugin repository for an updated release.

Workarounds

Remove the plugin entirely if a patched release is not yet available from preblogging
Restrict access to the WordPress admin interface using IP allowlists or VPN-based access controls
Deploy a web application firewall with WordPress-specific rule sets that block reflected XSS payload patterns
Educate administrators to avoid clicking unsolicited links that reference the site's domain with embedded parameters

bash

# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate increase-sociability
wp plugin delete increase-sociability