CVE-2025-31583: WP Copy Media URL CSRF Vulnerability

CVE-2025-31583 Overview

CVE-2025-31583 is a Cross-Site Request Forgery (CSRF) vulnerability in the Ashish Ajani WP Copy Media URL plugin for WordPress. The flaw affects all versions of wp-copy-media-url up to and including version 2.1. An attacker can leverage the CSRF weakness to inject persistent JavaScript payloads, leading to Stored Cross-Site Scripting (XSS) in the WordPress administrative context. The vulnerability is tracked under CWE-352: Cross-Site Request Forgery.

Critical Impact

A successful exploit can store attacker-controlled JavaScript in the WordPress database, executing in the browser of any administrator who visits an affected page.

Affected Products

• Ashish Ajani WP Copy Media URL plugin (wp-copy-media-url)
• All versions from n/a through 2.1
• WordPress sites with the plugin installed and activated

Discovery Timeline

• 2025-03-31 - CVE-2025-31583 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-31583

Vulnerability Analysis

The vulnerability chains a Cross-Site Request Forgery weakness with a Stored Cross-Site Scripting sink. The plugin fails to verify the authenticity of state-changing requests, allowing an attacker to forge requests on behalf of an authenticated WordPress user. When the forged request is processed, attacker-supplied input is stored without sufficient sanitization or output encoding. The stored payload then renders as executable JavaScript whenever a privileged user views the affected interface. Exploitation requires user interaction, typically tricking an authenticated administrator into visiting a malicious page or clicking a crafted link.

Root Cause

The root cause is missing or improperly validated anti-CSRF tokens on plugin endpoints that accept user input. WordPress provides the wp_nonce_field() and check_admin_referer() primitives to prevent forged submissions, but wp-copy-media-url does not consistently enforce them. The absence of these checks, combined with insufficient sanitization of stored values, enables the CSRF-to-Stored-XSS chain.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker hosts a malicious page containing an auto-submitting form or image tag targeting the vulnerable plugin endpoint. When an authenticated WordPress administrator visits the attacker-controlled page, the browser submits the forged request using the administrator's session cookies. The plugin processes the request and stores the malicious payload. The stored JavaScript executes in subsequent administrator sessions, enabling session theft, account takeover, or full site compromise.

No public proof-of-concept code is available. Technical details are described in the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-31583

Indicators of Compromise

• Unexpected <script> tags, event handlers, or JavaScript payloads stored in WordPress post metadata or plugin option tables.
• Outbound requests from administrator browsers to unfamiliar domains shortly after visiting wp-admin pages.
• New or modified WordPress administrator accounts created without authorized change records.
• Referer headers pointing to external sites preceding state-changing requests against plugin endpoints.

Detection Strategies

• Audit the WordPress database for stored content containing HTML or JavaScript inside fields managed by wp-copy-media-url.
• Inspect web server access logs for POST requests to plugin endpoints with cross-origin Referer or missing nonce parameters.
• Deploy a Web Application Firewall (WAF) rule that flags POST requests to /wp-admin/ lacking valid _wpnonce parameters.

Monitoring Recommendations

• Monitor administrative session activity for anomalous JavaScript execution or DOM modifications via browser-side telemetry.
• Enable WordPress audit logging to capture plugin setting changes, user creation, and option updates.
• Alert on installations of the affected plugin across managed WordPress fleets until a patched version is confirmed.

How to Mitigate CVE-2025-31583

Immediate Actions Required

• Deactivate and remove the wp-copy-media-url plugin until a fixed release is published by the maintainer.
• Review WordPress administrator accounts and rotate credentials for any user who may have been targeted.
• Inspect the database for injected scripts and remove any malicious content found in plugin-managed fields.

Patch Information

At the time of publication, no fixed version is listed in the Patchstack Vulnerability Report. Affected sites should monitor the plugin's WordPress.org page for a release that supersedes version 2.1 and apply it once available.

Workarounds

• Restrict access to /wp-admin/ by IP allowlist using web server configuration or a WAF.
• Enforce a strict Content Security Policy (CSP) that disallows inline scripts in the WordPress admin interface.
• Require administrators to use separate browser profiles or sessions when managing WordPress to limit CSRF exposure.

# Example: deactivate the vulnerable plugin via WP-CLI
wp plugin deactivate wp-copy-media-url
wp plugin delete wp-copy-media-url