CVE-2025-31874: WebberZone Snippetz Stored XSS Vulnerability

CVE-2025-31874 Overview

CVE-2025-31874 is a stored cross-site scripting (XSS) vulnerability in the Ajay WebberZone Snippetz plugin for WordPress, also known as add-to-all. The flaw affects all versions of WebberZone Snippetz up to and including 2.1.1. The plugin fails to properly neutralize user-supplied input before rendering it in generated web pages, allowing attackers to inject persistent malicious scripts. Successful exploitation requires an authenticated user with at least contributor-level privileges and user interaction from a victim. Injected payloads execute in the browser context of any user viewing the affected page, enabling session theft, administrative account takeover, and further compromise of the WordPress site.

Critical Impact
Authenticated attackers can inject persistent JavaScript that executes in administrators' browsers, enabling account takeover and privilege escalation within affected WordPress sites.

Affected Products

WebberZone Snippetz (add-to-all) versions through 2.1.1
WordPress installations with the vulnerable plugin active
Multi-author WordPress environments where lower-privileged contributor accounts exist

Discovery Timeline

2025-04-01 - CVE-2025-31874 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-31874

Vulnerability Analysis

The vulnerability is classified as Improper Neutralization of Input During Web Page Generation [CWE-79]. The WebberZone Snippetz plugin accepts input from authenticated users and stores it in the WordPress database without adequate sanitization or output encoding. When the plugin later renders this stored data in generated pages, the browser interprets the injected content as executable JavaScript.

Stored XSS is more severe than reflected XSS because the payload persists in the site database. Every user who loads the affected page executes the attacker's script without needing to click a crafted link. The changed scope (S:C) in the vulnerability's CVSS vector reflects that the injected code executes in a security context different from the vulnerable component itself, typically the WordPress administrator's browser session.

Root Cause

The root cause is missing or insufficient input validation and output escaping within one or more of the plugin's snippet-handling functions. WordPress provides sanitization APIs such as wp_kses, esc_html, and esc_attr for exactly this purpose. When plugin developers omit these controls, attacker-supplied HTML and <script> tags survive intact through the storage-and-retrieval cycle.

Attack Vector

An attacker with contributor-level or higher WordPress credentials submits a snippet containing malicious JavaScript through the plugin's input fields. The payload is stored in the WordPress database. When an administrator or other privileged user views the affected admin screen or public page, the script executes in their authenticated session. The attacker can then perform actions such as creating new administrator accounts, exfiltrating cookies, or modifying site content. See the Patchstack Vulnerability Report for additional technical detail.

Detection Methods for CVE-2025-31874

Indicators of Compromise

Unexpected <script> tags, javascript: URIs, or event handlers such as onerror and onload within snippet content stored by the WebberZone Snippetz plugin
New WordPress administrator accounts created without a corresponding audit trail
Outbound HTTP requests from admin browsers to unfamiliar domains shortly after loading pages that render plugin output

Detection Strategies

Audit the WordPress database tables used by the add-to-all plugin for HTML tags and script content in fields expected to hold plain text
Review web server access logs for POST requests to plugin endpoints containing encoded script payloads submitted by contributor-level accounts
Deploy a web application firewall (WAF) rule set that inspects requests to /wp-admin/ for common XSS payload patterns

Monitoring Recommendations

Enable WordPress activity logging to record content submissions by non-administrator accounts
Alert on creation of new administrator or editor accounts, particularly those created outside normal onboarding workflows
Monitor for anomalous browser-initiated administrative actions such as bulk plugin installs or theme edits following snippet page views

How to Mitigate CVE-2025-31874

Immediate Actions Required

Update the WebberZone Snippetz (add-to-all) plugin to a version later than 2.1.1 once a patched release is available from the vendor
Audit contributor, author, and editor accounts, disabling any that are unused or unrecognized
Review existing snippets for injected script content and remove suspicious entries
Force a password reset for all administrative accounts if any indicator of compromise is observed

Patch Information

At the time of NVD publication, the advisory identifies all versions up to and including 2.1.1 as affected. Consult the Patchstack Vulnerability Report and the plugin's WordPress.org changelog for the current fixed version and update immediately.

Workarounds

Deactivate and remove the WebberZone Snippetz plugin until a patched version is installed
Restrict snippet-editing capability to trusted administrator accounts by adjusting user roles
Deploy a WordPress-aware WAF with XSS payload filtering in front of the site
Enable a strict Content Security Policy (CSP) that disallows inline scripts to limit exploitability

bash

# Disable the vulnerable plugin from the command line using WP-CLI
wp plugin deactivate add-to-all
wp plugin delete add-to-all

# Verify no active installations remain
wp plugin list --status=active | grep add-to-all