CVE-2025-7828: WP Filter & Combine RSS Feeds Auth Bypass

CVE-2025-7828 Overview

CVE-2025-7828 is a missing authorization vulnerability in the WP Filter & Combine RSS Feeds plugin for WordPress. The flaw affects all versions up to and including 0.4. The plugin fails to verify user capabilities in the post_listing_page() function, allowing authenticated users with Contributor-level access or higher to delete RSS feed configurations. The vulnerability maps to CWE-862: Missing Authorization.

Critical Impact
Authenticated attackers with low-privilege Contributor accounts can delete feeds managed by the plugin, disrupting site content and integrations that depend on those feeds.

Affected Products

WordPress plugin: WP Filter & Combine RSS Feeds
All versions up to and including 0.4
WordPress sites permitting Contributor-level (or higher) user registration

Discovery Timeline

2025-08-23 - CVE-2025-7828 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-7828

Vulnerability Analysis

The vulnerability resides in the post_listing_page() function inside the WP Filter & Combine RSS Feeds plugin. The function processes administrative feed management actions but omits a capability check. WordPress plugins are expected to gate privileged actions with current_user_can() verification against an appropriate capability such as manage_options. Without that check, any authenticated request that reaches the handler is executed regardless of the caller's role.

Exploitation results in the deletion of RSS feed entries configured through the plugin. The confidentiality and availability of the underlying WordPress site are not directly affected, but the integrity of feed data is compromised. Repeated abuse can remove all managed feeds, disrupting front-end content aggregation and any downstream widgets or shortcodes that render the removed feeds.

Root Cause

The root cause is a missing authorization control [CWE-862]. The post_listing_page() handler executes state-changing operations without confirming that the caller holds the capability required for feed administration. This design permits horizontal and vertical action abuse from lower-privileged accounts.

Attack Vector

Exploitation requires network access to the WordPress site and an authenticated session with Contributor or higher privileges. The attacker submits a crafted request to the plugin endpoint that invokes post_listing_page() with a delete action. Because no capability check is performed, the handler proceeds and removes the target feed. No user interaction is required beyond the attacker's own authenticated request.

Refer to the Wordfence Vulnerability Report for additional technical context.

Detection Methods for CVE-2025-7828

Indicators of Compromise

Unexpected deletion of RSS feed entries managed by the WP Filter & Combine RSS Feeds plugin
WordPress access logs showing POST requests to the plugin's admin endpoints originating from Contributor-level accounts
Sudden reduction in aggregated feed content displayed on the front end

Detection Strategies

Audit the installed version of the WP Filter & Combine RSS Feeds plugin against version 0.4 or earlier
Review WordPress user activity logs for feed modification events initiated by non-administrator accounts
Correlate deletion events with the calling user's role using database or logging plugins that record capability context

Monitoring Recommendations

Enable WordPress audit logging that captures plugin admin-page requests and the acting user role
Alert on any feed-delete operation performed by an account below Editor or Administrator
Monitor authentication logs for new Contributor accounts created shortly before feed deletion activity

How to Mitigate CVE-2025-7828

Immediate Actions Required

Inventory WordPress sites running the WP Filter & Combine RSS Feeds plugin at version 0.4 or earlier
Restrict or disable Contributor-level self-registration on affected sites until a patch is verified
Deactivate the plugin if it is not actively used, and remove it from the WordPress installation

Patch Information

At the time of publication, the WordPress Plugin Page is the authoritative source for updates. Administrators should confirm whether a version newer than 0.4 has been released that adds a current_user_can() capability check to post_listing_page(). Apply that update as soon as it is available and validate the fix in a staging environment before production rollout.

Workarounds

Remove or deactivate the WP Filter & Combine RSS Feeds plugin until an updated version is installed
Downgrade the roles of untrusted Contributor accounts, or convert them to Subscriber where feed management is not required
Use a Web Application Firewall (WAF) rule to block requests to the plugin's admin action endpoints from non-administrator sessions

bash

# Example: identify affected plugin version via WP-CLI
wp plugin get wp-filter-combine-rss-feeds --field=version

# Deactivate the plugin as an interim mitigation
wp plugin deactivate wp-filter-combine-rss-feeds