CVE-2025-57981: WP Social Widget Stored XSS Vulnerability

CVE-2025-57981 Overview

CVE-2025-57981 is a stored Cross-Site Scripting (XSS) vulnerability in the WP Social Widget plugin by catchsquare for WordPress. The flaw affects all plugin versions up to and including 2.3.1. It stems from improper neutralization of user-supplied input during web page generation [CWE-79].

An authenticated attacker with low privileges can inject malicious scripts that execute in the browsers of users who view the affected pages. The vulnerability requires user interaction and has a scope change, meaning injected scripts can impact resources beyond the vulnerable component.

Critical Impact
Authenticated attackers can inject persistent JavaScript payloads that execute against site visitors and administrators, enabling session theft, administrative action hijacking, and client-side redirection.

Affected Products

catchsquare WP Social Widget plugin for WordPress
All versions from n/a through 2.3.1
WordPress sites with the plugin active and accessible to authenticated contributors

Discovery Timeline

2025-09-22 - CVE-2025-57981 published to NVD
2026-09-30 - Last updated in NVD database

Technical Details for CVE-2025-57981

Vulnerability Analysis

The WP Social Widget plugin fails to sanitize and escape input supplied through widget configuration fields. Values submitted by authenticated users are stored in the WordPress database and later rendered on front-end pages without proper encoding.

Because the payload persists in the database, every visitor who loads a page containing the widget triggers the injected script. The scope change indicator reflects the fact that stored scripts run in the browser context of other users, including administrators, extending impact beyond the attacker's own session.

The vulnerability requires a user with at least contributor-level permissions to modify widget content, and a victim must load a page where the widget renders. Successful exploitation can lead to cookie theft, forced browser actions on behalf of administrators, and defacement.

Root Cause

The root cause is missing output escaping in the widget rendering path. User-supplied values—such as social profile labels or URLs—are concatenated into HTML output without passing through WordPress sanitization functions like esc_html(), esc_attr(), or esc_url().

Attack Vector

The attack vector is network-based through the WordPress admin interface. An attacker authenticates to a vulnerable WordPress site, navigates to the widget configuration, and inserts a JavaScript payload into a susceptible field. When any user—often a higher-privileged administrator—loads a page containing the widget, the browser executes the stored script.

The vulnerability mechanism is described in the Patchstack XSS Vulnerability Report. No verified public exploit code is available.

Detection Methods for CVE-2025-57981

Indicators of Compromise

Widget configuration records in wp_options containing <script>, onerror=, onload=, or javascript: strings
Unexpected outbound requests from visitor browsers to attacker-controlled domains originating from pages containing the social widget
New or modified administrator accounts created shortly after a widget edit event in the WordPress audit log

Detection Strategies

Inspect the wp_options and widget-related tables for serialized widget data containing HTML or script tags
Review WordPress access logs for POST requests to widgets.php or customize.php by low-privileged accounts
Deploy a Content Security Policy (CSP) in report-only mode to surface inline script execution on pages that embed the widget

Monitoring Recommendations

Alert on modifications to the active plugin set and widget configurations in production WordPress environments
Monitor administrator sessions for anomalous behavior following widget updates, including unexpected password resets or role changes
Correlate web application firewall (WAF) events referencing XSS signatures with the /wp-admin/widgets.php endpoint

How to Mitigate CVE-2025-57981

Immediate Actions Required

Deactivate the WP Social Widget plugin on all WordPress instances until a patched release is confirmed
Audit existing widget configurations for injected HTML or JavaScript and remove any suspicious entries
Rotate administrator credentials and invalidate active sessions if widget tampering is detected

Patch Information

At the time of publication, no fixed version is listed in the NVD entry. The advisory indicates all versions through 2.3.1 are affected. Monitor the Patchstack advisory and the plugin's WordPress.org listing for patch availability.

Workarounds

Restrict widget and theme management capabilities to trusted administrators by auditing the edit_theme_options capability assignment
Deploy a WAF rule to block requests containing script tags or event handlers in widget-related POST parameters
Enforce a strict Content Security Policy that disallows inline scripts on front-end pages

bash

# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate wp-social-widget
wp plugin delete wp-social-widget

# Audit widget options for suspicious payloads
wp option get widget_wp_social_widget --format=json | grep -iE 'script|onerror|onload|javascript:'