CVE-2025-48346 is a medium-severity vulnerability classified under CWE-862 (Missing Authorization) affecting the Etsy360 product specifically its 'Embed and Integrate Etsy Shop' component up to version 1.0.4. The vulnerability arises because certain functionalities within the Etsy360 Embed and Integrate Etsy Shop are not properly constrained by Access Control Lists (ACLs), allowing unauthorized users to access functionality that should be restricted. According to the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N), this vulnerability can be exploited remotely over the network without any privileges or user interaction, indicating a low barrier to exploitation. The impact is limited to integrity, meaning unauthorized users can perform actions that modify or manipulate data or functionality, but there is no direct impact on confidentiality or availability. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was published on May 19, 2025, and has been enriched by CISA, indicating recognition by US cybersecurity authorities. The lack of authentication requirement and the ability to exploit remotely make this a concern for organizations using Etsy360's embedding features, as attackers could manipulate embedded shop functionalities potentially leading to unauthorized changes in displayed products, pricing, or other shop-related data. However, the absence of confidentiality or availability impact reduces the overall criticality. The vulnerability affects the embedding and integration features, which are likely used by websites or platforms that incorporate Etsy shop elements, potentially exposing a broad attack surface depending on the deployment scale.

For European organizations, the impact of CVE-2025-48346 primarily involves the integrity of embedded Etsy shop functionalities on their websites or platforms. Organizations using Etsy360's embedding tools could face unauthorized modifications to their shop displays, product listings, or transactional elements, potentially leading to reputational damage, customer trust erosion, and indirect financial losses. While the vulnerability does not expose sensitive customer data or disrupt service availability, the ability for attackers to manipulate shop content could facilitate fraud, misinformation, or unauthorized transactions. E-commerce platforms, digital marketing agencies, and businesses relying on Etsy shop integrations are particularly at risk. Given the remote and unauthenticated exploitation vector, attackers could automate attacks at scale, affecting multiple organizations simultaneously. The lack of known exploits in the wild currently limits immediate risk, but the medium severity score suggests organizations should proactively address the vulnerability to prevent future exploitation. The impact is more pronounced for organizations with high traffic or significant reliance on Etsy shop embedding for revenue generation or customer engagement.

To mitigate CVE-2025-48346, European organizations should first monitor Etsy360 vendor communications for official patches or updates addressing the missing authorization controls. Until patches are available, organizations should consider temporarily disabling or restricting the use of the Etsy360 Embed and Integrate Etsy Shop features on their websites, especially on publicly accessible pages. Implementing additional access control mechanisms at the web application firewall (WAF) or reverse proxy level to restrict or monitor requests targeting the embedding functionalities can help detect or block unauthorized attempts. Conduct thorough code reviews and penetration testing focused on embedded shop components to identify any custom integration weaknesses. Organizations should also audit their embedded shop configurations to ensure minimal exposure of sensitive or critical functionality. Employing strict Content Security Policies (CSP) and input validation can reduce the risk of exploitation through embedded content manipulation. Finally, maintain vigilant monitoring of web logs and user activity for unusual patterns that may indicate exploitation attempts.