CVE-2025-47441: Progress Bar WordPress Plugin XSS Vulnerability

CVE-2025-47441 Overview

CVE-2025-47441 is a stored cross-site scripting (XSS) vulnerability in the Chris Reynolds Progress Bar plugin for WordPress. The flaw affects all plugin versions up to and including 2.2.3. It stems from improper neutralization of user-supplied input during web page generation, categorized as [CWE-79]. An authenticated attacker with low privileges can inject malicious JavaScript that executes in the browsers of users who view the affected page. Because the scope changes when the payload fires, the attack can cross privilege boundaries and impact administrative sessions.

Critical Impact
Authenticated contributors can inject persistent JavaScript that executes in the context of site administrators and visitors, enabling session theft, account takeover, and further site compromise.

Affected Products

Chris Reynolds Progress Bar (WordPress plugin)
All versions from initial release through 2.2.3
WordPress sites with the vulnerable plugin installed and active

Discovery Timeline

2025-05-07 - CVE-2025-47441 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-47441

Vulnerability Analysis

The Progress Bar plugin fails to properly sanitize and escape user-controlled input before rendering it in the WordPress front end or admin interface. Attackers with contributor-level privileges or higher can inject arbitrary HTML and JavaScript through plugin input fields. The injected payload is stored in the database and executed each time an affected page loads. Because this is stored XSS, the payload persists across sessions until an administrator manually removes it.

The vulnerability requires user interaction to trigger the payload, typically viewing a post or page that renders the progress bar shortcode or widget. The scope change indicates that the injected script can access resources outside the vulnerable component, including administrator sessions and WordPress REST API endpoints.

Root Cause

The root cause is missing output encoding in the plugin's rendering logic. WordPress provides functions such as esc_attr(), esc_html(), and wp_kses_post() for context-aware escaping, but the plugin does not apply these consistently to attributes controllable by lower-privileged users.

Attack Vector

An authenticated user with contributor or editor privileges creates or edits content that invokes the Progress Bar plugin. The attacker supplies a crafted value containing JavaScript inside plugin parameters. When an administrator or site visitor loads the resulting page, the browser executes the payload under the site's origin. Common outcomes include stealing authentication cookies, performing forced administrative actions, or planting persistent backdoors through the WordPress plugin installer.

Refer to the Patchstack XSS Vulnerability Advisory for technical details on the vulnerable parameters.

Detection Methods for CVE-2025-47441

Indicators of Compromise

Unexpected <script> tags, javascript: URIs, or event handlers such as onerror and onload stored in wp_posts or wp_postmeta.
Outbound HTTP requests from browsers viewing WordPress pages to unfamiliar domains.
Creation of new administrator accounts or unauthorized plugin installations shortly after a contributor edits content.
Progress Bar shortcodes containing HTML entities or encoded payloads that decode to executable JavaScript.

Detection Strategies

Query the WordPress database for progress bar shortcode instances containing suspicious characters or script fragments.
Deploy a web application firewall (WAF) rule set that inspects POST bodies to wp-admin/post.php for XSS patterns.
Enable audit logging on WordPress to track content modifications by contributor and editor accounts.
Correlate content-edit events with subsequent administrator session activity to identify potential exploitation chains.

Monitoring Recommendations

Forward WordPress access, error, and audit logs to a centralized SIEM for retention and correlation.
Alert on newly created privileged users, plugin installations, and modifications to wp_options following content edits by non-admin roles.
Monitor Content Security Policy (CSP) violation reports to surface unexpected inline script execution.

How to Mitigate CVE-2025-47441

Immediate Actions Required

Deactivate the Progress Bar plugin on all WordPress sites until a patched version is confirmed available.
Audit contributor and editor accounts and remove any that are unused or unrecognized.
Review published content for injected <script> blocks or suspicious HTML attributes and remove malicious entries.
Rotate administrator credentials and invalidate active sessions if exploitation is suspected.

Patch Information

At the time of publication, the advisory identifies all versions of the Progress Bar plugin through 2.2.3 as vulnerable. Consult the Patchstack advisory for the latest patch status and upgrade guidance.

Workarounds

Restrict content editing to trusted administrator accounts using role management until patched.
Deploy a WAF with signatures blocking common stored XSS payloads targeting WordPress shortcode parameters.
Enforce a strict Content Security Policy that disallows inline scripts and untrusted script sources.
Replace the plugin with an actively maintained alternative if no fixed version is released.

bash

# Example: deactivate the plugin via WP-CLI
wp plugin deactivate progress-bar
wp plugin delete progress-bar

# Search the database for potentially injected payloads
wp db query "SELECT ID, post_title FROM wp_posts WHERE post_content LIKE '%<script%' OR post_content LIKE '%onerror=%';"