CVE-2026-118407 in Premium Packages Plugin
Summary
by MITRE • 11/04/2026
The Premium Packages WordPress plugin before 7.3.1 does not verify that a user claiming a guest order is the original buyer, allowing any authenticated user to take ownership of any unclaimed guest order, and thereby read the buyer's billing details and download their purchased files, by supplying only the order identifier.
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Analysis
by VulDB Data Team • 11/04/2026
The vulnerability identified in Premium Packages WordPress plugin versions prior to 7.3.1 represents a critical failure in access control logic, specifically within the mechanism handling unclaimed guest orders. This flaw stems from an insufficient verification process where the application fails to validate that the authenticated user requesting ownership of a specific order is indeed the original purchaser associated with that transaction. In typical e-commerce workflows involving digital goods or premium content, systems often allow users who did not complete the initial purchase—such as those receiving access via email links—to claim and manage orders under certain conditions. However, in this implementation, the security boundary relies solely on the possession of a unique order identifier rather than verifying user identity against stored transaction records. This architectural oversight allows any authenticated account holder to bypass legitimate ownership checks by simply supplying the target order's ID through standard API endpoints or web forms designed for claiming orders.
From a technical perspective, this issue classifies as an Insecure Direct Object Reference vulnerability under CWE-639. The application exposes internal object identifiers directly to users without performing adequate authorization checks to ensure that the requesting user has permission to access or modify those specific objects. By accepting only the order identifier and trusting it implicitly, the software fails to cross-reference this input with session data or database records linking the current user's identity to the transaction. This lack of server-side validation means that an attacker does not need complex exploitation techniques; they merely need to obtain a valid order ID, which can often be discovered through enumeration, social engineering, or by observing public-facing URLs if such identifiers are predictable or leaked elsewhere on the site.
The operational impact of this vulnerability is severe due to the sensitive nature of the data involved. Successful exploitation allows an authenticated attacker to assume ownership of any unclaimed guest order within the system. Once ownership is transferred, the attacker gains full access to the buyer's personally identifiable information, including billing details such as names, addresses, and potentially payment method fragments depending on how the plugin stores or displays this data. Furthermore, because Premium Packages typically controls access to downloadable digital assets, the attacker can also download files that were intended exclusively for the original purchaser. This constitutes a significant breach of confidentiality and privacy, violating user trust and potentially exposing sensitive financial information to unauthorized parties.
This vulnerability aligns with several tactics in the MITRE ATT&CK framework, particularly those related to Account Manipulation and Data Exfiltration. The ability to take ownership of another user's account or transaction falls under techniques such as Account Ownership Abuse (T1098) or Privilege Escalation via Object Reference manipulation. Additionally, the subsequent access to billing data and proprietary files relates directly to Credential Access and Collection phases where sensitive information is harvested from compromised accounts. The lack of proper authorization checks exemplifies a common pattern in web application security failures where identity verification is decoupled from resource access control.
To mitigate this vulnerability, immediate action must be taken by upgrading the Premium Packages plugin to version 7.3.1 or later, which addresses these logic flaws through enhanced validation mechanisms. In addition to updating software, administrators should implement strict server-side authorization checks that verify the current user's identity against the original buyer information stored in the database before allowing any ownership transfer requests. It is also advisable to review other areas of the application for similar patterns where object identifiers are used without corresponding permission validations. Regular security audits and penetration testing focusing on access control logic can help identify such weaknesses early, ensuring that authentication mechanisms are robustly coupled with authorization checks to prevent unauthorized data exposure and transaction manipulation.