CVE-2026-110119 in Yshopmall
Summary
by MITRE • 10/13/2026
Yshopmall through 2.0.0 contains an insecure direct object reference vulnerability in the member address API that allows authenticated members to read, overwrite and delete other members' shipping addresses. Attackers can enumerate sequential address ids via /address/detail/{id}, /address/del and /address/edit to expose recipient names, phone numbers and addresses, reassign them, or delete them.
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Analysis
by VulDB Data Team • 10/13/2026
The vulnerability identified in Yshopmall versions up to 2.0.0 represents a critical failure in access control mechanisms within the application's member address management module. This flaw is classified as an Insecure Direct Object Reference (IDOR), which corresponds to CWE-639 in the Common Weakness Enumeration standard. The core issue stems from the API endpoints responsible for handling shipping addresses, specifically /address/detail/{id}, /address/del, and /address/edit, failing to validate whether the authenticated user requesting access has ownership or authorized permission over the specific resource identified by the provided ID parameter. In a secure implementation, the application should cross-reference the requested object identifier with the identity of the currently logged-in user to ensure that operations are only performed on data belonging to that user. Instead, Yshopmall relies solely on the client-supplied identifier without enforcing server-side authorization checks, allowing any authenticated member to manipulate address records associated with other members by simply altering the numeric ID in their HTTP requests.
The operational impact of this vulnerability is severe due to its potential for both privacy violations and service disruption. Attackers can exploit the /address/detail/{id} endpoint to enumerate sequential integer IDs, thereby gaining unauthorized access to sensitive personally identifiable information belonging to other users. This includes recipient names, phone numbers, and full physical addresses, which constitutes a significant breach of data confidentiality and user privacy. Beyond mere observation, the lack of authorization checks on the edit and delete endpoints allows attackers to overwrite existing shipping details with malicious or incorrect information, potentially causing delivery failures for legitimate customers. Furthermore, the ability to delete address records via /address/del can lead to denial-of-service conditions where users are unable to complete purchases because their saved addresses have been removed from the system without authorization.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1078, specifically Valid Accounts and potentially T1539 if used for data exfiltration of personal information. The sequential nature of the IDs facilitates automated enumeration attacks, where an attacker can script requests to iterate through ID ranges to harvest large volumes of user data efficiently. This type of vulnerability is particularly dangerous in e-commerce platforms because it undermines trust in the platform's security posture and exposes users to potential physical safety risks or identity theft based on leaked address information. The simplicity of the exploit means that even attackers with minimal technical expertise can leverage this flaw, increasing the likelihood of successful exploitation in the wild.
Mitigation strategies must focus on implementing robust server-side access control checks at every API endpoint handling user-specific data. Developers should ensure that for any request involving a resource identifier, such as an address ID, the backend logic verifies that the authenticated session's user ID matches the owner ID stored within the database record for that specific address. This principle of explicit authorization must be applied consistently across all CRUD operations related to member addresses. Additionally, implementing rate limiting and monitoring for unusual patterns in API requests can help detect enumeration attempts early. It is also recommended to use non-sequential identifiers such as UUIDs instead of simple integers where feasible, although this does not replace the need for proper access control checks. Regular security testing, including automated DAST scans focused on IDOR vulnerabilities, should be integrated into the development lifecycle to prevent similar issues in future releases.