CVE-2026-107788 in SmartyParcel Plugin
Summary
by MITRE • 10/21/2026
The SmartyParcel WordPress plugin before 1.23.4 does not perform authorisation checks when deleting shipping label records, allowing any authenticated user such as a subscriber to delete the shipping label and tracking records of arbitrary orders store-wide.
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified in versions of the SmartyParcel WordPress plugin prior to release 1.23.4 represents a critical failure in access control mechanisms within the application's backend logic. Specifically, the function responsible for handling requests to delete shipping label and tracking records lacks proper authorization verification. In a secure implementation, any action that modifies or deletes persistent data must verify that the requesting user possesses the necessary privileges associated with their role. However, this plugin fails to validate whether the authenticated user initiating the deletion request holds an administrative position or has explicit permission to manage order-related metadata. Consequently, the security boundary intended to restrict such operations to high-privilege accounts is effectively bypassed due to the absence of these checks in the code path handling delete actions for shipping labels.
This technical flaw allows any authenticated user on the WordPress site, regardless of their assigned role or capability level, to execute unauthorized deletions. In typical WordPress installations, roles range from subscribers with minimal permissions to administrators with full control. The vulnerability enables a subscriber-level account, which should theoretically have no access to backend administrative functions involving order management, to send crafted requests that result in the permanent removal of shipping label data and tracking information for any arbitrary order within the system's database. This lack of object-level authorization means there is no restriction based on ownership or role-based access control policies when processing deletion commands against specific record identifiers.
The operational impact of this vulnerability extends beyond simple data loss, affecting both business continuity and customer trust. Shipping labels and tracking numbers are essential components of e-commerce operations, serving as the primary link between merchants and logistics providers for order fulfillment. The ability to arbitrarily delete these records can disrupt supply chain visibility, causing orders to appear unshipped or lost in transit systems even when they have been physically dispatched. This disruption forces manual intervention by administrators to reconstruct tracking data from external sources, leading to increased operational overhead and potential delays in customer deliveries. Furthermore, the integrity of order history is compromised, which may hinder accounting reconciliation and dispute resolution processes if records are maliciously erased or accidentally deleted by low-privilege users exploiting this flaw.
From a classification perspective, this vulnerability aligns with CWE-269, Improper Privilege Management, as it involves an actor obtaining privileges that they should not have for the specific action of deleting sensitive data. It also maps to ATT&CK technique T1530, Data from Cloud Storage Object or Bucket, in contexts where such records are considered critical operational assets, and more broadly reflects principles associated with Broken Access Control (T1496) within cloud-based applications. The core issue is the failure to enforce role-based access control on a state-changing operation, which is a common pattern in vulnerable web application logic.
To mitigate this vulnerability, immediate action must be taken by upgrading the SmartyParcel plugin to version 1.23.4 or later, where these authorization checks have been implemented and validated. Administrators should verify that all instances of the plugin are updated across their WordPress environments. In scenarios where an upgrade is not immediately feasible due to compatibility constraints with other plugins or themes, temporary mitigations include restricting access to the WordPress admin area by IP address if possible, although this does not fully mitigate API-based attacks. Additionally, implementing a Web Application Firewall can help detect and block anomalous deletion requests originating from low-privilege user sessions. Regular security audits focusing on authorization logic for all administrative endpoints are recommended to prevent similar flaws in future updates or other plugins installed within the ecosystem.