CVE-2024-7492: MainWP Child Reports CSRF Vulnerability

CVE-2024-7492 Overview

CVE-2024-7492 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the MainWP Child Reports plugin for WordPress in all versions up to and including 2.2. The flaw stems from missing or incorrect nonce validation on the network_options_action() function. Unauthenticated attackers can update arbitrary network options if they successfully trick a site administrator into clicking a crafted link. The arbitrary option update can be leveraged for privilege escalation. Exploitation is limited to WordPress multisite instances. The vulnerability is tracked under CWE-352.

Critical Impact
Successful exploitation allows unauthenticated attackers to escalate privileges on WordPress multisite installations by abusing an authenticated administrator's session to update arbitrary network options.

Affected Products

MainWP Child Reports plugin for WordPress versions up to and including 2.2
WordPress multisite installations running the affected plugin
Sites where administrators access untrusted links while authenticated

Discovery Timeline

2024-08-08 - CVE-2024-7492 published to NVD
2025-03-01 - Last updated in NVD database

Technical Details for CVE-2024-7492

Vulnerability Analysis

The MainWP Child Reports plugin exposes a network-level handler, network_options_action(), which processes requests to update WordPress network options. WordPress relies on nonces (single-use tokens) to confirm that state-changing requests originate from a legitimate user session. The affected handler either omits the nonce check or implements it incorrectly, leaving the action reachable through forged cross-origin requests.

An attacker can craft a malicious page or link that issues a request to the vulnerable endpoint. When an authenticated network administrator visits the resource, the browser submits the request with the administrator's session cookies. The request then succeeds with administrator privileges and modifies arbitrary network options. Because WordPress multisite options govern role assignments and registration behavior, an attacker can chain the option update into a full privilege escalation.

Root Cause

The root cause is missing or incorrect nonce validation in the network_options_action() function defined in classes/class-network.php. Without a verified wp_nonce_field or check_admin_referer call, the handler cannot distinguish between an administrator-initiated request and a cross-site forgery. See the WordPress Trac Code Reference for the affected source.

Attack Vector

Exploitation requires user interaction from a network administrator on a WordPress multisite instance. The attacker hosts a page containing a form or script that targets the plugin's network options endpoint. When the administrator visits the page, the browser sends an authenticated POST request that updates arbitrary options. No prior authentication on the target site is required from the attacker. The vulnerability is not exploitable on single-site WordPress installations. Refer to the Wordfence Vulnerability Report for additional analysis.

No public proof-of-concept code is available in the referenced sources, so a sanitized exploitation example is not provided here.

Detection Methods for CVE-2024-7492

Indicators of Compromise

Unexpected modifications to WordPress network options, particularly default_role, users_can_register, or active plugins
New administrator or super-admin accounts created without a corresponding admin-initiated workflow
Web server access logs showing POST requests to MainWP Child Reports network admin endpoints with off-site Referer headers
Outbound requests from administrator browsers to unfamiliar domains immediately preceding option changes

Detection Strategies

Monitor WordPress audit logs for changes to wp_sitemeta and network options outside of expected administrative activity windows
Inspect HTTP requests targeting network_options_action() for missing or invalid _wpnonce parameters
Correlate administrator session activity with referrer headers pointing to external or low-reputation domains

Monitoring Recommendations

Enable a WordPress activity logging plugin to record option, role, and user changes across the multisite network
Alert on creation of new privileged accounts or modifications to role capabilities
Forward web server and WordPress audit logs to a centralized SIEM for cross-source correlation and retention

How to Mitigate CVE-2024-7492

Immediate Actions Required

Update the MainWP Child Reports plugin to a version later than 2.2 that includes the patched nonce validation
Audit network administrator accounts and recently modified network options for unauthorized changes
Require multisite administrators to log out of the WordPress dashboard before browsing untrusted sites

Patch Information

The vendor addressed the issue by adding proper nonce validation to the affected handler. Review the fix in the WordPress Trac Changeset and upgrade all WordPress multisite installations running MainWP Child Reports.

Workarounds

Deactivate the MainWP Child Reports plugin on multisite installations until the patched version is deployed
Restrict access to /wp-admin/network/ endpoints by IP allowlist at the web server or WAF layer
Deploy a web application firewall rule that blocks requests to the plugin's network options handler lacking a valid _wpnonce parameter

bash

# Example WP-CLI command to update the plugin across a multisite network
wp plugin update mainwp-child-reports --network