CVE-2025-60147 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the HT Feed plugin developed by HT Plugins. This vulnerability arises due to improper neutralization of input during web page generation, allowing malicious actors to inject and store arbitrary scripts within the plugin's data handling processes. When a victim accesses a page that renders this stored malicious input, the injected script executes in the context of the victim's browser. The affected versions include all versions up to and including 1.3.0, with no specific earliest version identified. The vulnerability has a CVSS v3.1 base score of 6.5, indicating a medium severity level. The CVSS vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) indicates that the attack can be performed remotely over the network with low attack complexity, requires privileges (likely a user with some level of authenticated access), and user interaction (such as clicking a link or visiting a page) is necessary. The scope is changed, meaning the vulnerability affects resources beyond the initially vulnerable component. The impact includes low confidentiality, integrity, and availability impacts, but the stored nature of the XSS increases the risk of persistent exploitation. No known exploits are currently reported in the wild, and no patches have been linked yet. Stored XSS vulnerabilities can be leveraged for session hijacking, defacement, phishing, or delivering further malware, especially in environments where users have elevated privileges or sensitive data is accessible via the plugin interface.

For European organizations, the impact of this vulnerability depends on the deployment of the HT Feed plugin within their web infrastructure. Organizations using HT Feed to aggregate or display content may expose their users to persistent XSS attacks, potentially leading to session hijacking, unauthorized actions performed on behalf of users, or data theft. This is particularly critical for organizations handling sensitive personal data under GDPR, as exploitation could lead to data breaches and regulatory penalties. The medium severity and requirement for some level of authenticated access reduce the likelihood of mass exploitation but do not eliminate targeted attacks, especially against internal users or administrators. Additionally, the changed scope indicates that the vulnerability could affect other components or services interacting with HT Feed, amplifying the risk. The absence of known exploits suggests a window for proactive mitigation, but organizations should not delay remediation given the potential for future exploitation.

European organizations should implement the following specific mitigation steps: 1) Immediately audit all web applications and content management systems to identify instances of the HT Feed plugin version 1.3.0 or earlier. 2) Restrict plugin access to trusted users only, minimizing the number of accounts with privileges to submit or modify content that HT Feed processes. 3) Employ web application firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting the plugin's endpoints. 4) Implement strict Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 5) Sanitize and validate all user inputs at both client and server sides, especially inputs that are stored and rendered by HT Feed. 6) Monitor logs and user activity for unusual behavior indicative of exploitation attempts. 7) Engage with the vendor or community to obtain patches or updates as soon as they become available and prioritize their deployment. 8) Educate users about the risks of clicking suspicious links or interacting with untrusted content within affected applications. These measures go beyond generic advice by focusing on access control, input validation, and layered defenses tailored to the plugin's operational context.