Pinterest Automatic - Authentication Bypass (CVE-2021-4380)
Description
The Pinterest Automatic plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on the 'wp_pinterest_automatic_parse_request' function and the 'process_form.php' script in versions up to, and including, 1.14.3. This makes it possible for unauthenticated attackers to update arbitrary options on a site that can be used to create new administrative user accounts or redirect unsuspecting site visitors.
psychologyCrowdSec Analysis
CVE-2021-4380 is a critical authorization bypass vulnerability in the Pinterest Automatic plugin for WordPress, affecting versions up to 1.14.3. This flaw allows unauthenticated attackers to update arbitrary site options, potentially leading to the creation of new administrative accounts or malicious redirection of site visitors. Exploitation of this vulnerability could result in full site compromise and significant security risks for affected WordPress installations.
CrowdSec has been tracking this vulnerability and its exploits since 15th of October 2025.
CrowdSec has not observed any significant exploitation activity targeting CVE-2021-4380 across its network. As a result, no community-driven trend analysis is available for this vulnerability at this time.
Attackers exploit the endpoint /?wp_pinterest_automatic=settings to perform unauthorized POST requests, allowing them to update arbitrary WordPress site options without authentication.
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| Event | Date |
|---|---|
| CVE Published | 2023-06-07 |
| Rule Released | 2025-10-15 |
| CrowdSec First Seen | 2025-10-31 |