CVE-2025-9374 Overview
CVE-2025-9374 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] affecting the Ultimate Tag Warrior Importer plugin for WordPress. The flaw exists in all versions up to and including 0.2. The root cause is missing or incorrect nonce validation on an importer function. Unauthenticated attackers can trigger tag imports by tricking a site administrator into clicking a crafted link. Successful exploitation requires user interaction from a privileged user. The vulnerability was published to the National Vulnerability Database on August 29, 2025.
Critical Impact
An unauthenticated attacker can force a logged-in WordPress administrator to import tags without consent, altering site content taxonomy through social engineering.
Affected Products
- WordPress Ultimate Tag Warrior Importer plugin — all versions through 0.2
- WordPress installations with the utw-importer plugin active
- Sites administered by users authenticated in the same browser session
Discovery Timeline
- 2025-08-29 - CVE-2025-9374 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-9374
Vulnerability Analysis
The Ultimate Tag Warrior Importer plugin exposes an importer function without validating a WordPress nonce token. WordPress uses nonces to confirm that state-changing requests originate from a legitimate user session and page. The plugin either omits the wp_verify_nonce() check or implements it incorrectly. Any authenticated administrator visiting an attacker-controlled page while logged into the target WordPress site can have their browser silently submit the import request. The resulting action performs tag imports under the administrator's session cookie.
The attack does not require the attacker to hold credentials on the target site. It requires only that a privileged user be lured to an external page hosting the forged request. Impact is limited to integrity — attackers can inject tags into the site taxonomy but cannot directly read data or induce a denial of service through this flaw.
Root Cause
The vulnerability stems from missing or improperly implemented nonce validation on the importer handler. WordPress plugins are expected to call check_admin_referer() or wp_verify_nonce() on requests that modify server state. The plugin's import function omits this check, breaking the CSRF protection contract that WordPress provides.
Attack Vector
An attacker crafts a malicious HTML page containing an auto-submitting form or image tag targeting the vulnerable importer endpoint on the victim's WordPress site. The attacker then delivers the link through phishing email, chat, or a comment on any site the administrator visits. When the administrator loads the page while their WordPress session is active, the browser attaches the session cookie to the outbound request. The plugin processes the import without verifying request authenticity.
No verified proof-of-concept code is available. Refer to the Wordfence Vulnerability Report for additional technical detail.
Detection Methods for CVE-2025-9374
Indicators of Compromise
- Unexpected creation of new tags in the WordPress taxonomy without a corresponding administrator activity log entry
- HTTP POST requests to the utw-importer plugin endpoint originating from external Referer headers
- Administrator sessions performing import actions immediately after visiting untrusted external URLs
Detection Strategies
- Review WordPress access logs for POST requests to plugin admin pages containing utw-importer in the path
- Correlate Referer headers on state-changing admin requests against the site's own domain
- Audit the wp_terms and wp_term_taxonomy tables for bulk tag additions outside expected content workflows
Monitoring Recommendations
- Enable a web application firewall rule that inspects requests to /wp-admin/ endpoints for missing or invalid nonce parameters
- Alert on administrator account activity where the HTTP Referer points to an external domain
- Track plugin activity through a WordPress audit logging plugin to capture taxonomy modifications with actor attribution
How to Mitigate CVE-2025-9374
Immediate Actions Required
- Deactivate and remove the Ultimate Tag Warrior Importer plugin if it is not actively required for content migration
- Restrict administrator browser sessions from visiting untrusted external sites while logged into WordPress
- Deploy a web application firewall with CSRF protection rules covering WordPress admin endpoints
Patch Information
No patched version is listed in the NVD advisory at time of publication. The plugin remains vulnerable in all versions through 0.2. Consult the WordPress Plugin UTW Importer page for release status and remove the plugin if no fixed version is available.
Workarounds
- Uninstall the plugin after completing any required tag imports rather than leaving it active
- Require administrators to use a separate browser or browser profile dedicated to WordPress administration
- Enforce SameSite=Strict cookie attributes on the WordPress session cookie to block cross-origin request inclusion
- Apply least-privilege principles so that only accounts actively performing migrations hold administrator roles
# Remove the vulnerable plugin via WP-CLI
wp plugin deactivate utw-importer
wp plugin delete utw-importer
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
