CVE-2026-85132 in Cookie Consent Plugin
Summary
by MITRE • 09/09/2026
The WPLP Cookie Consent WordPress plugin before 4.4.2 does not perform nonce or capability checks on one of its cookie scanner AJAX actions, allowing any authenticated user, such as a subscriber, to read back the automated scan schedule the administrator configured.
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability identified in WPLP Cookie Consent versions prior to 4.4.2 represents a significant authorization bypass within the WordPress plugin ecosystem. This flaw specifically affects an AJAX action responsible for retrieving information about the cookie scanner's configuration, particularly the automated scan schedule set by administrators. The core technical deficiency lies in the absence of proper access control mechanisms during the processing of this specific request. In secure web application development, any operation that modifies or exposes sensitive administrative data must be protected by two primary security controls: nonce verification and capability checks. Nonce validation ensures that the request originates from a legitimate source within the expected context, preventing Cross-Site Request Forgery attacks, while capability checks verify that the user initiating the action possesses the necessary permissions to perform it. The plugin fails to implement either of these safeguards for this particular endpoint, leaving it wide open to exploitation by any authenticated user on the site.
From a technical perspective, WordPress relies heavily on its role-based access control system to manage privileges among different user types such as administrators, editors, authors, and subscribers. Subscribers typically have minimal permissions, restricted primarily to profile management and commenting if enabled. However, due to this vulnerability, an attacker with even the lowest level of authenticated access can interact directly with the plugin's backend logic via AJAX requests. By crafting a specific HTTP POST request targeting the vulnerable endpoint, a subscriber-level user can bypass standard WordPress security filters that would normally restrict such administrative queries. This allows them to retrieve JSON or HTML responses containing detailed configuration data, including the frequency and timing of automated cookie scans. The lack of nonce verification also means this attack does not require complex social engineering tactics beyond basic authentication; it is a straightforward exploitation of missing server-side validation logic.
The operational impact of this vulnerability extends beyond simple information disclosure. While reading scan schedules might seem like low-severity data exposure, it provides attackers with valuable intelligence regarding the security posture and maintenance routines of the target website. Knowledge of when automated scans occur can aid in timing further attacks to avoid detection or to exploit windows where system resources are heavily utilized by scanning processes. Furthermore, this vulnerability is indicative of a broader pattern of insecure direct object references and improper privilege management within the plugin's codebase. If one administrative endpoint lacks proper checks, it raises concerns about other potential endpoints that may similarly be unprotected. This undermines the principle of least privilege, allowing low-privileged users to access high-privilege functions, which can serve as a stepping stone for more severe attacks such as remote code execution or complete site compromise if combined with other vulnerabilities.
In terms of industry standards and threat modeling, this vulnerability aligns closely with CWE-285, Improper Authorization, where the application does not properly verify that the user has sufficient privileges to perform an action. It also relates to CWE-352, Cross-Site Request Forgery (CSRF), due to the absence of nonce verification which is a standard mitigation for CSRF in WordPress environments. From an offensive security perspective, this behavior maps directly to MITRE ATT&CK technique T1078, Valid Accounts, specifically within the context of Local Account Abuse where low-privileged accounts are used to access restricted resources. The exploitation path involves authenticating with valid credentials and then leveraging those credentials to perform unauthorized administrative actions through API endpoints that lack proper validation checks.
To mitigate this vulnerability, site administrators must immediately update the WPLP Cookie Consent plugin to version 4.4.2 or later, where these authorization gaps have been addressed by developers. Until an update is applied, temporary mitigations include restricting access to WordPress admin-ajax.php through web application firewall rules if feasible, although this may impact legitimate functionality. Additionally, enforcing strong password policies and multi-factor authentication for all user accounts reduces the risk of credential theft that could facilitate exploitation of this flaw. Regular security audits and code reviews focusing on AJAX endpoint implementations are recommended to ensure consistent adherence to secure coding practices across all plugins installed on WordPress sites. Developers should always implement nonce verification using wp_verify_nonce and capability checks using current_user_can or similar functions before processing any sensitive administrative requests in future updates.