CVE-2025-9115 is a reflected Cross-Site Scripting (XSS) vulnerability identified in the Etsy Shop WordPress plugin versions prior to 3.0.7. The vulnerability arises because the plugin fails to properly escape the $_SERVER['REQUEST_URI'] parameter before outputting it within an HTML attribute. This improper handling allows an attacker to craft a malicious URL containing executable JavaScript code that, when visited by a user on an affected site using an older web browser, can execute in the context of that site. Reflected XSS vulnerabilities typically require the victim to click on a specially crafted link, which then causes the malicious script to run in their browser session. The vulnerability is categorized under CWE-79, which covers improper neutralization of input leading to script injection. The CVSS v3.1 base score is 5.6 (medium severity), reflecting a network attack vector with high attack complexity, no privileges required, no user interaction, and a scope limited to the vulnerable component. The impact affects confidentiality, integrity, and availability at a low level, as the attacker can potentially steal session cookies, deface content, or perform actions on behalf of the user. No known exploits are currently reported in the wild, and no patches or updates are linked in the provided data, though the plugin version 3.0.7 or later presumably addresses the issue. The vulnerability specifically affects WordPress sites using the Etsy Shop plugin before version 3.0.7, and the risk is higher for users on outdated browsers that do not have modern XSS protections.

For European organizations, the impact of this vulnerability depends largely on their use of the Etsy Shop WordPress plugin. Organizations running e-commerce or marketing sites with this plugin are at risk of reflected XSS attacks that could lead to session hijacking, phishing, or unauthorized actions performed under the victim's credentials. While the vulnerability requires no authentication and no user interaction, exploitation depends on victims clicking malicious links, which could be distributed via email or social engineering campaigns. The medium severity score indicates moderate risk; however, the potential for reputational damage, loss of customer trust, and regulatory implications under GDPR for data breaches involving session tokens or personal data leakage should be considered. Additionally, older browsers more common in some enterprise environments may increase exposure. The reflected XSS could also be leveraged as a stepping stone for more complex attacks, such as delivering malware or redirecting users to malicious sites. Overall, the threat could disrupt business operations, compromise user data confidentiality, and damage brand reputation if exploited.

European organizations should immediately verify if their WordPress installations use the Etsy Shop plugin and identify the version in use. If running a version prior to 3.0.7, they should upgrade to the latest plugin version that includes the fix. In the absence of an official patch, organizations can implement temporary mitigations such as applying web application firewall (WAF) rules to detect and block suspicious request URIs containing script tags or suspicious payloads. Additionally, enforcing Content Security Policy (CSP) headers can help mitigate the impact of XSS by restricting the execution of inline scripts and untrusted sources. Organizations should also ensure that users are encouraged or required to use modern, updated browsers with built-in XSS protections. Regular security audits and scanning for reflected XSS vulnerabilities on public-facing sites can help detect similar issues early. Finally, educating staff and users about the risks of clicking on suspicious links can reduce the likelihood of successful exploitation.