CVE-2025-7842 Overview
CVE-2025-7842 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Silencesoft RSS Reader plugin for WordPress in all versions up to and including 0.6. The flaw exists on the sil_rss_edit_page administrative page, which lacks proper nonce validation [CWE-352]. An unauthenticated attacker can craft a malicious request that deletes RSS feeds when a site administrator is tricked into clicking a link or visiting an attacker-controlled page. The vulnerability was published to the National Vulnerability Database (NVD) on August 23, 2025.
Critical Impact
Unauthenticated attackers can delete RSS feeds from WordPress sites running the Silencesoft RSS Reader plugin by tricking an administrator into interacting with a forged request.
Affected Products
- Silencesoft RSS Reader plugin for WordPress, all versions up to and including 0.6
- WordPress sites with the external-rss-reader plugin installed and active
- Administrator sessions on affected WordPress installations
Discovery Timeline
- 2025-08-23 - CVE-2025-7842 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-7842
Vulnerability Analysis
The Silencesoft RSS Reader plugin exposes an administrative page identified as sil_rss_edit_page that processes state-changing requests without verifying a WordPress nonce token. WordPress nonces are the standard mechanism for confirming that a request originated from a legitimate authenticated user session rather than from a forged cross-origin request.
Because the plugin does not validate a nonce on this page, any authenticated administrator who loads attacker-controlled HTML in the same browser session will silently submit the delete action. The vulnerability requires user interaction such as clicking a link, but does not require the attacker to hold any credentials on the target site.
The impact is limited to integrity of the RSS feed configuration. The vulnerability does not disclose data and does not provide code execution, but it allows attackers to disrupt content aggregation on affected sites.
Root Cause
The root cause is missing or incorrect nonce validation on the sil_rss_edit_page handler. WordPress provides wp_verify_nonce() and check_admin_referer() functions specifically to prevent CSRF against administrative actions. The plugin either omits these checks or applies them incorrectly, allowing forged requests to reach the RSS feed deletion logic.
Attack Vector
Exploitation follows a standard CSRF pattern. The attacker hosts a page that issues a request to the vulnerable sil_rss_edit_page endpoint on the target WordPress site with parameters that trigger feed deletion. The attacker then lures an authenticated administrator to visit that page through phishing, social engineering, or a link posted in a public forum. The browser automatically attaches the administrator's authentication cookies, and the WordPress site processes the request as legitimate. No exploitation code is required beyond an HTML form or image tag pointing at the vulnerable endpoint.
Detection Methods for CVE-2025-7842
Indicators of Compromise
- Unexpected deletion of RSS feed entries configured in the Silencesoft RSS Reader plugin
- Administrator HTTP requests to sil_rss_edit_page with Referer headers pointing to external, untrusted domains
- WordPress access log entries showing feed modification actions immediately after an administrator clicked an external link
Detection Strategies
- Monitor WordPress access logs for POST or GET requests to wp-admin pages containing sil_rss_edit_page that carry off-site Referer values
- Enable WordPress audit logging plugins to track configuration changes made by administrator accounts and correlate with browsing activity
- Alert on RSS feed deletion events that occur outside of scheduled maintenance windows
Monitoring Recommendations
- Review the plugin's stored configuration regularly to identify unauthorized removal of feeds
- Deploy a web application firewall (WAF) rule to inspect Referer and Origin headers on requests to WordPress admin endpoints
- Track administrator session activity and flag admin actions triggered from non-admin browsing contexts
How to Mitigate CVE-2025-7842
Immediate Actions Required
- Deactivate the Silencesoft RSS Reader plugin until a patched version is confirmed available from the vendor
- Instruct WordPress administrators to log out of admin sessions before browsing untrusted sites or clicking external links
- Audit current RSS feed configurations and back them up so deletions can be restored
Patch Information
At the time of publication, no fixed version is listed in the NVD entry for CVE-2025-7842. Administrators should consult the WordPress plugin page and the Wordfence vulnerability report for updates on a patched release. Until a fix is issued, treat all versions through 0.6 as vulnerable.
Workarounds
- Remove or deactivate the plugin if RSS aggregation functionality is not business-critical
- Restrict access to the WordPress admin area by IP allowlisting through the web server or a WAF
- Require administrators to use dedicated browsers or browser profiles for WordPress administration to reduce cross-site request exposure
- Deploy a CSRF-aware WAF ruleset that enforces same-origin Referer checks on wp-admin requests
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
