CVE-2025-57909 Overview
CVE-2025-57909 is a Missing Authorization vulnerability [CWE-862] in the Rouergue Création Editor Custom Color Palette plugin for WordPress. The plugin, tracked as editor-custom-color-palette, fails to enforce proper access control checks. All versions up to and including 3.5.6 are affected. Authenticated attackers with low-level privileges can exploit incorrectly configured access control security levels to reach protected functionality. The Patchstack advisory classifies this as a broken access control issue affecting confidentiality. No public exploit is available at time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Critical Impact
Authenticated users with minimal privileges can access plugin functions restricted to higher-privilege roles, exposing sensitive configuration data.
Affected Products
- Rouergue Création Editor Custom Color Palette WordPress plugin
- All versions from n/a through 3.5.6
- WordPress sites with the editor-custom-color-palette plugin installed and activated
Discovery Timeline
- 2025-09-22 - CVE-2025-57909 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-57909
Vulnerability Analysis
The Editor Custom Color Palette plugin exposes one or more actions that lack proper capability or nonce verification. WordPress plugins are expected to invoke current_user_can() and validate nonces before executing privileged operations. The affected plugin omits these checks on at least one endpoint, allowing lower-privilege authenticated users to invoke functions intended for administrators. The attack requires network access to the WordPress site and a valid authenticated session, but no user interaction beyond the attacker's own request.
Root Cause
The root cause is Missing Authorization [CWE-862]. The plugin's handler executes sensitive logic without verifying that the requesting user holds the required WordPress capability (for example, manage_options). Access control is delegated to assumptions about who can reach the endpoint rather than enforced within the handler itself. Refer to the Patchstack Vulnerability Report for the affected function paths.
Attack Vector
An attacker with a low-privilege authenticated account, such as Subscriber or Contributor, sends a crafted HTTP request to the vulnerable plugin endpoint. Because authorization is not enforced, the server processes the request and returns or modifies data that should be restricted. The vulnerability affects confidentiality but does not directly permit integrity or availability impact according to the CVSS vector provided in NVD.
No verified exploitation code is publicly available. See the Patchstack advisory for further technical context.
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Stop Identity AttacksDetection Methods for CVE-2025-57909
Indicators of Compromise
- HTTP requests to plugin AJAX endpoints (/wp-admin/admin-ajax.php) referencing editor-custom-color-palette actions from low-privilege user sessions
- Unexpected reads or modifications of color palette settings by non-administrator accounts
- Anomalous access patterns to wp-content/plugins/editor-custom-color-palette/ resources
Detection Strategies
- Review WordPress access logs for requests to plugin-specific actions correlated with Subscriber or Contributor session cookies
- Audit the wp_options table for unauthorized changes to plugin-managed settings
- Enable WordPress audit logging plugins to record capability-check failures and privileged operations
Monitoring Recommendations
- Forward WordPress and web server logs to a centralized SIEM for query and correlation
- Alert on repeated HTTP 200 responses to admin-ajax.php actions from accounts that should not access administrative functions
- Monitor plugin version inventory across managed WordPress sites to identify hosts running versions <= 3.5.6
How to Mitigate CVE-2025-57909
Immediate Actions Required
- Identify all WordPress installations running the Editor Custom Color Palette plugin at version 3.5.6 or earlier
- Update the plugin to a patched release as soon as one is published by the vendor
- Restrict or disable the plugin on sites where an update is not yet available
- Review user accounts and remove unused low-privilege accounts that could be leveraged for exploitation
Patch Information
At the time of publication, the Patchstack advisory does not list a fixed version above 3.5.6. Consult the Patchstack Vulnerability Report and the plugin's WordPress.org listing for the latest remediated release before deploying.
Workarounds
- Deactivate and remove the editor-custom-color-palette plugin until a patched version is confirmed available
- Deploy a Web Application Firewall (WAF) rule to block unauthenticated and low-privilege requests to plugin AJAX actions
- Enforce least privilege by auditing WordPress roles and restricting registration to trusted users only
- Require multi-factor authentication for all WordPress accounts to reduce the risk of credentialed access
# Disable the vulnerable plugin via WP-CLI on affected hosts
wp plugin deactivate editor-custom-color-palette
wp plugin delete editor-custom-color-palette
# Verify the plugin is no longer present
wp plugin list --name=editor-custom-color-palette
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
