CVE-2025-14052 is an improper access control vulnerability identified in youlaitech's youlai-mall software versions 1.0.0 and 2.0.0. The flaw exists in the getMemberById function located in the /mall-ums/app-api/v1/members/ API endpoint. This function improperly validates the memberId parameter, allowing an attacker to remotely manipulate this argument to retrieve member information without proper authorization checks. The vulnerability does not require authentication or user interaction, making it remotely exploitable over the network with low attack complexity. The improper access control leads to unauthorized disclosure and potential modification of member data, impacting confidentiality and integrity. The vendor was contacted early but has not responded or provided a patch, and exploit details have been publicly disclosed, increasing the likelihood of exploitation. The CVSS 4.0 base score is 5.3 (medium severity), reflecting network attack vector, low complexity, no privileges required, and no user interaction, with limited impact on availability but partial impact on confidentiality and integrity. This vulnerability primarily threatens organizations using youlai-mall for managing member data, especially in e-commerce contexts, where unauthorized access to member profiles could lead to data breaches or fraud.

For European organizations, exploitation of CVE-2025-14052 could lead to unauthorized access to sensitive member information, including personal data, which may violate GDPR and other data protection regulations, resulting in legal and financial penalties. The breach of confidentiality undermines customer trust and could facilitate further attacks such as identity theft or fraud. Integrity impacts could allow attackers to manipulate member data, potentially disrupting business operations or causing reputational damage. Since the vulnerability is remotely exploitable without authentication, attackers can target exposed youlai-mall instances at scale. The lack of vendor response and patch increases the window of exposure. Organizations relying on youlai-mall for customer or membership management in sectors like retail, services, or membership-based platforms are particularly vulnerable. The impact on availability is limited, but the overall risk to data security and compliance is significant.

Until an official patch is released by youlaitech, European organizations should implement strict network-level access controls to restrict access to the /mall-ums/app-api/v1/members/ endpoint, such as IP whitelisting or VPN-only access. Employ Web Application Firewalls (WAFs) with custom rules to detect and block anomalous requests manipulating the memberId parameter. Conduct thorough input validation and enforce authorization checks at the application layer to ensure that users can only access their own member data. Monitor logs for unusual access patterns or repeated attempts to access unauthorized member IDs. Consider temporarily disabling or restricting the vulnerable API endpoint if feasible. Engage with youlaitech for updates and apply patches promptly once available. Additionally, review and enhance overall identity and access management policies to reduce exposure. Perform regular security assessments and penetration testing focused on access control mechanisms.