CVE-2024-13511 Overview
CVE-2024-13511 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the Variation Swatches for WooCommerce WordPress plugin. The flaw exists in versions 1.0.8 through 1.3.2 and stems from improper nonce verification in the plugin's settings reset functionality. The settings_init() function processes reset actions based on URL query parameters, while the delete_settings() function performs faulty nonce validation. An attacker can trick an authenticated administrator into clicking a crafted link, resetting the plugin's settings without authorization.
Critical Impact
Unauthorized modification of plugin settings through social-engineered administrator interaction, allowing attackers to reset configuration data on affected WordPress sites running vulnerable versions of the plugin.
Affected Products
- Variation Swatches for WooCommerce plugin version 1.0.8
- Variation Swatches for WooCommerce plugin versions 1.0.9 through 1.3.1
- Variation Swatches for WooCommerce plugin version 1.3.2
Discovery Timeline
- 2025-01-23 - CVE-2024-13511 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-13511
Vulnerability Analysis
The vulnerability is a Cross-Site Request Forgery flaw classified under [CWE-352]. It resides in the settings management logic of the Variation Swatches for WooCommerce plugin. The settings_init() function inspects specific query parameters in the URL to determine whether a settings reset should occur. The associated delete_settings() function implements nonce validation, but the check is incorrectly constructed and fails to reject requests that lack a valid nonce.
An attacker exploits this by crafting a malicious URL or embedding a request inside a web page. When an authenticated administrator visits the attacker-controlled resource, the browser issues the reset request with the administrator's active session. The plugin processes the reset without confirming request authenticity, wiping configured settings.
Exploitation requires user interaction from a privileged account, but no attacker authentication is needed. Impact is limited to integrity of plugin configuration; no direct confidentiality or availability effects are documented.
Root Cause
The root cause is a broken CSRF protection mechanism inside delete_settings(). WordPress provides wp_verify_nonce() and check_admin_referer() for validating request origin, but the plugin's implementation does not enforce a failure path when nonce verification does not succeed. As a result, requests to the reset endpoint proceed regardless of whether a valid nonce token is present.
Attack Vector
The attack is delivered over the network and requires an authenticated administrator to interact with attacker-controlled content. A typical scenario involves phishing an administrator with a link to a page containing an auto-submitting form or embedded image that triggers the reset URL on the target WordPress site. Because the browser sends the administrator's authentication cookies with the request, the plugin executes the reset action. No specialized tooling or high attack complexity is required.
See the Wordfence Vulnerability Report and the WordPress Plugin Settings File for technical details of the vulnerable code path.
Detection Methods for CVE-2024-13511
Indicators of Compromise
- Unexpected reset of Variation Swatches for WooCommerce plugin configuration on affected WordPress sites.
- HTTP requests in web server logs targeting the plugin settings page with reset-related query parameters and a missing or invalid _wpnonce value.
- Referer headers on reset requests pointing to external, untrusted domains.
Detection Strategies
- Monitor WordPress admin request logs for GET or POST requests to the plugin's settings handler containing reset action parameters.
- Correlate administrator session activity with outbound traffic to unknown domains preceding configuration changes.
- Enable WordPress audit logging plugins that record option changes tied to Variation Swatches for WooCommerce.
Monitoring Recommendations
- Alert on modifications to plugin option keys managed by Variation Swatches for WooCommerce in the wp_options table.
- Track administrator browser sessions for cross-origin requests initiated to the WordPress admin area.
- Review web application firewall telemetry for requests to the plugin settings endpoint that lack valid nonce parameters.
How to Mitigate CVE-2024-13511
Immediate Actions Required
- Update the Variation Swatches for WooCommerce plugin to a version later than 1.3.2 that includes the corrected nonce validation.
- Audit the plugin's current settings and restore them from a known-good backup if unauthorized reset activity is suspected.
- Instruct administrators to log out of the WordPress admin area when not actively managing the site.
Patch Information
The vendor addressed the issue in a subsequent release. The upstream fix is documented in the WordPress Plugin Changeset Update, which corrects the nonce validation logic in delete_settings(). Site operators should apply the update through the WordPress plugin management interface.
Workarounds
- Deploy a web application firewall rule that blocks requests to the plugin's settings reset endpoint when a valid _wpnonce parameter is absent.
- Restrict WordPress admin area access by source IP address using web server or firewall controls.
- Require administrators to use browsers with strict SameSite cookie enforcement to limit cross-origin request delivery.
- Temporarily deactivate the plugin until the patched version is installed if configuration integrity is critical.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.