CVE-2025-58620 Overview
CVE-2025-58620 is a stored cross-site scripting (XSS) vulnerability in the PDF for WPForms WordPress plugin developed by add-ons.org. The flaw affects all versions of pdf-for-wpforms up to and including 6.2.1. The plugin fails to properly neutralize user-supplied input during web page generation, allowing authenticated attackers to inject persistent JavaScript payloads. Because the injected script executes in the browser context of any user who views the affected page, exploitation can lead to session theft, administrative account takeover, and unauthorized content modification. The vulnerability is classified under CWE-79.
Critical Impact
Authenticated attackers with low privileges can store malicious JavaScript that executes across trust boundaries, enabling session hijacking and privilege escalation within WordPress environments.
Affected Products
- PDF for WPForms plugin (pdf-for-wpforms) versions through 6.2.1
- WordPress installations using the add-ons.org PDF for WPForms extension
- Sites where low-privileged users can submit content processed by the plugin
Discovery Timeline
- 2025-09-03 - CVE-2025-58620 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-58620
Vulnerability Analysis
The vulnerability stems from improper neutralization of user-supplied input rendered within WordPress pages generated by the PDF for WPForms plugin. Attackers submit crafted payloads containing HTML or JavaScript through plugin-exposed input fields. The plugin stores this input and later renders it without adequate output encoding.
When a victim loads an affected page, the browser interprets the stored payload as executable script. The scope change flag in the CVSS vector indicates the injected code operates outside the vulnerable component's original security context. This enables cross-user impact within the WordPress site.
Exploitation requires authentication with low privileges and user interaction to trigger the payload. Successful attacks can compromise administrator sessions, exfiltrate cookies, and modify site content through the victim's authenticated context.
Root Cause
The plugin does not sanitize or escape user input before including it in generated HTML output. Standard WordPress escaping functions such as esc_html(), esc_attr(), or wp_kses() are either absent or applied incorrectly in the affected code paths. This omission allows raw markup to persist in stored data and reach the browser without neutralization.
Attack Vector
An authenticated attacker submits a form or interacts with plugin functionality containing a malicious payload such as <script> tags or event handlers embedded in attributes. The payload is stored in the WordPress database. When an administrator or another authenticated user views the rendered output, the script executes in their session. Refer to the Patchstack advisory for additional context.
Detection Methods for CVE-2025-58620
Indicators of Compromise
- Unexpected <script> tags, javascript: URIs, or DOM event handlers stored in WordPress database tables associated with the plugin
- Outbound HTTP requests from administrator browsers to unfamiliar domains shortly after loading plugin-rendered pages
- New or modified administrator accounts created without a corresponding audit trail
- Session cookies appearing in web server or WAF logs as query parameters to external hosts
Detection Strategies
- Audit wp_posts, wp_postmeta, and plugin-specific tables for HTML markup within fields expected to contain plain text
- Deploy a web application firewall rule set that flags XSS payload patterns in requests targeting plugin endpoints
- Monitor WordPress user activity logs for privilege changes originating from administrator sessions that loaded plugin-generated pages
Monitoring Recommendations
- Enable Content Security Policy (CSP) violation reporting to surface unexpected script execution on WordPress front-end and admin pages
- Log and review all plugin update, deactivation, and configuration changes for anomalies
- Correlate authenticated form submissions with subsequent script execution events using browser telemetry or endpoint monitoring
How to Mitigate CVE-2025-58620
Immediate Actions Required
- Update PDF for WPForms to a version released after 6.2.1 that addresses the XSS flaw as soon as the vendor publishes a patch
- Restrict which user roles can submit content processed by the plugin until a fix is deployed
- Review all stored form submissions and plugin-managed content for existing injected payloads and remove them
- Rotate administrator credentials and invalidate active sessions if compromise is suspected
Patch Information
Refer to the Patchstack vulnerability entry for the latest remediation guidance and vendor patch availability. Apply updates through the WordPress plugin manager once a fixed release is available.
Workarounds
- Deactivate the PDF for WPForms plugin until a patched version is installed
- Deploy a web application firewall with signatures that block common XSS payload patterns targeting WordPress plugin endpoints
- Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins
- Limit form submission capabilities to trusted authenticated users through WordPress role management
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
