CVE-2025-1405 Overview
The Product Catalog Simple plugin for WordPress contains a stored Cross-Site Scripting (XSS) vulnerability in the show_products shortcode. All versions up to and including 1.7.11 are affected. The flaw stems from insufficient input sanitization and output escaping on user-supplied shortcode attributes. Authenticated attackers with contributor-level access or above can inject arbitrary JavaScript into pages. The injected scripts execute in the browser of any visitor who loads the affected page, enabling session theft, redirection, and further client-side attacks. The vulnerability is tracked as [CWE-79] Improper Neutralization of Input During Web Page Generation.
Critical Impact
Contributor-level accounts can persist arbitrary JavaScript in published pages, leading to browser-side compromise of administrators and site visitors.
Affected Products
- Implecode Product Catalog Simple plugin for WordPress, all versions up to and including 1.7.11
- WordPress sites using the plugin's show_products shortcode
- Sites permitting contributor-level or higher accounts to author content containing shortcodes
Discovery Timeline
- 2025-02-28 - CVE-2025-1405 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-1405
Vulnerability Analysis
The vulnerability resides in the plugin's show_products shortcode handler. When WordPress renders a page containing this shortcode, the plugin reads user-supplied attributes and injects them into the HTML output. The plugin fails to sanitize these attribute values on input and does not escape them on output. As a result, attribute values containing HTML or JavaScript payloads render as executable markup in the browser. The stored nature of the flaw means the payload persists in the post or page content and fires each time the affected page is viewed.
Root Cause
The root cause is missing input sanitization and missing output escaping around shortcode attribute processing. WordPress provides functions such as sanitize_text_field(), esc_attr(), and esc_html() for this purpose, but the affected versions of Product Catalog Simple do not consistently apply them to show_products attributes. This maps to [CWE-79], Improper Neutralization of Input During Web Page Generation.
Attack Vector
Exploitation requires an authenticated account with the contributor role or higher and user interaction from a subsequent visitor. An attacker authors a post or page that includes the show_products shortcode with a crafted attribute containing an XSS payload. Once the content is submitted and rendered, any user who accesses the page executes the attacker-supplied script in their session context. Administrators viewing the page in the admin preview or on the live site are prime targets for account takeover through cookie theft or forced administrative actions.
No public proof-of-concept exploit code is available. See the Wordfence Vulnerability Report for additional technical detail.
Detection Methods for CVE-2025-1405
Indicators of Compromise
- Posts or pages containing the show_products shortcode with attribute values that include HTML tags, javascript: URIs, or event handlers such as onerror, onload, or onmouseover.
- Unexpected <script> tags, <iframe> tags, or inline event handlers rendered in published pages containing plugin shortcodes.
- Contributor or author accounts creating content that references external JavaScript resources not aligned with site policy.
Detection Strategies
- Query the WordPress wp_posts table for post_content values matching show_products shortcodes with suspicious attribute payloads.
- Review browser Content Security Policy (CSP) violation reports for inline script or unexpected script-src violations originating on pages that render the plugin.
- Correlate contributor-account content submission events with subsequent DOM anomalies observed by client-side monitoring on public pages.
Monitoring Recommendations
- Audit user role assignments and revoke unnecessary contributor, author, or editor permissions.
- Monitor plugin version inventory across WordPress deployments and flag installations of Product Catalog Simple at 1.7.11 or below.
- Enable web application firewall (WAF) logging for requests to wp-admin/post.php and admin-ajax.php containing shortcode attributes with HTML control characters.
How to Mitigate CVE-2025-1405
Immediate Actions Required
- Update the Product Catalog Simple plugin to a version later than 1.7.11 once released by Implecode. Review the WordPress Trac Changeset for the vendor's code changes.
- Audit existing posts and pages for show_products shortcode usage and remove or sanitize any suspicious attribute content.
- Restrict contributor-level and higher accounts to trusted users and enforce multi-factor authentication on all WordPress accounts.
Patch Information
The vendor committed remediation in the plugin repository under changeset 3246414. Site administrators should upgrade to the fixed release published on the WordPress plugin directory. Refer to the Post Type X Plugin Developer Info page and the WordPress Trac Changeset for the fix implementation.
Workarounds
- Deactivate the Product Catalog Simple plugin until a patched version is applied.
- Deploy a WAF rule that blocks HTML control characters and JavaScript event handlers inside show_products shortcode attributes submitted through POST requests to the WordPress editor endpoints.
- Apply a strict Content Security Policy that disallows inline scripts to limit the impact of stored XSS payloads.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
