CVE-2025-66061 Overview
CVE-2025-66061 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] in the Craig Hewitt Seriously Simple Podcasting plugin for WordPress, maintained by Castos. The flaw affects all versions of seriously-simple-podcasting up to and including 3.13.0. An attacker can trick an authenticated user into submitting a forged HTTP request that performs unintended actions within the plugin. Exploitation requires user interaction, typically by convincing a logged-in administrator to visit a malicious page. The vulnerability has a limited confidentiality impact and no integrity or availability impact, according to the published CVSS vector.
Critical Impact
An attacker who successfully lures an authenticated WordPress user to a malicious page can trigger plugin actions without authorization, potentially exposing limited confidential information.
Affected Products
- Castos Seriously Simple Podcasting WordPress plugin versions up to and including 3.13.0
- WordPress sites with the seriously-simple-podcasting plugin installed and activated
- Any environment referenced by CPE cpe:2.3:a:castos:seriously_simple_podcasting:*:*:*:*:*:wordpress:*:*
Discovery Timeline
- 2025-11-21 - CVE-2025-66061 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-66061
Vulnerability Analysis
The Seriously Simple Podcasting plugin exposes one or more state-changing endpoints that do not adequately verify the origin of incoming requests. The plugin fails to enforce WordPress nonce validation or referer checks on sensitive actions, which is the standard defense against CSRF in the WordPress ecosystem. An attacker crafts an HTML page containing a form or script that issues a request to the vulnerable endpoint. When an authenticated WordPress user visits the attacker-controlled page, the browser automatically attaches session cookies, and the request executes with the user's privileges. The Patchstack advisory documents the affected version range and confirms the CSRF classification.
Root Cause
The root cause is missing or improperly implemented anti-CSRF protection on plugin request handlers. WordPress provides wp_nonce_field() and check_admin_referer() primitives for this purpose, and the vulnerable versions do not consistently apply them to all state-changing paths. This omission maps directly to CWE-352 (Cross-Site Request Forgery).
Attack Vector
The attack is network-based and requires user interaction. An attacker hosts a page containing a hidden form or JavaScript targeting the vulnerable plugin endpoint on the victim's WordPress site. The attacker delivers the URL through phishing, social media, or a compromised third-party site. When an authenticated user visits the page, their browser submits the forged request, and the plugin processes it as legitimate. No credentials or prior authorization are required from the attacker.
No verified public proof-of-concept code is available for this CVE. See the Patchstack Vulnerability Advisory for further technical detail.
Detection Methods for CVE-2025-66061
Indicators of Compromise
- Unexpected changes to Seriously Simple Podcasting settings, feeds, or episode metadata made outside normal administrative sessions.
- WordPress access logs showing POST requests to plugin endpoints with Referer headers pointing to external, untrusted domains.
- Administrative actions correlated with users clicking external links immediately before the change timestamp.
Detection Strategies
- Inventory WordPress installations and identify hosts running seriously-simple-podcasting at version 3.13.0 or earlier.
- Monitor web server logs for state-changing HTTP requests to plugin endpoints that lack a valid WordPress nonce parameter.
- Correlate authenticated user sessions with cross-origin referers on administrative POST requests.
Monitoring Recommendations
- Enable WordPress audit logging to record administrative changes attributable to specific users and timestamps.
- Alert on modifications to plugin configuration or podcast feed data that occur outside scheduled maintenance windows.
- Ingest WordPress and web server logs into a centralized SIEM to enable correlation across users, referers, and administrative endpoints.
How to Mitigate CVE-2025-66061
Immediate Actions Required
- Update the Seriously Simple Podcasting plugin to a version later than 3.13.0 as soon as a fixed release is published by Castos.
- Review recent administrative activity in the WordPress dashboard for unauthorized plugin configuration changes.
- Require administrators to log out of WordPress sessions when not actively managing the site.
Patch Information
Refer to the Patchstack Vulnerability Advisory for the current fix status and remediation guidance. At the time of publication, the advisory identifies all versions through 3.13.0 as affected. Monitor the Castos plugin page on the WordPress plugin repository for updated releases.
Workarounds
- Deactivate the seriously-simple-podcasting plugin until a patched version is available if the plugin is not business-critical.
- Restrict administrative access to trusted networks using IP allow-listing at the web server or WAF layer.
- Deploy a web application firewall rule that enforces same-origin Referer and Origin headers on WordPress admin POST requests.
- Train administrators to avoid clicking untrusted links while logged into the WordPress admin panel.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
