CVE-2025-60099 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the 'Embed Any Document' plugin developed by awsm.in. This vulnerability arises due to improper neutralization of input during web page generation, allowing malicious scripts to be stored and executed in the context of the affected web application. Specifically, the vulnerability exists in versions up to 2.7.7 of the plugin, though exact affected versions are not fully enumerated. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) reveals that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), requires privileges (PR:L) and user interaction (UI:R), and impacts confidentiality, integrity, and availability to a limited extent (C:L/I:L/A:L). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. Stored XSS vulnerabilities allow attackers to inject malicious JavaScript code that is permanently stored on the target server and executed when other users access the affected content. This can lead to session hijacking, defacement, redirection to malicious sites, or other malicious activities. The vulnerability is particularly dangerous in plugins like 'Embed Any Document' that are used to embed documents within web pages, as malicious scripts can be embedded within documents or their metadata, affecting all users who view the embedded content. No known exploits are reported in the wild yet, and no patches have been linked, indicating that remediation may still be pending or in development. The vulnerability requires the attacker to have some level of privileges (PR:L), likely meaning an authenticated user with limited rights, and user interaction is necessary for the attack to succeed, such as a victim viewing a maliciously crafted embedded document. The changed scope suggests that the impact extends beyond the plugin itself, potentially affecting the entire web application or site where the plugin is installed.

For European organizations, this vulnerability poses a significant risk especially for those relying on the 'Embed Any Document' plugin within their web infrastructure, such as corporate intranets, document management systems, or customer-facing portals. Exploitation could lead to unauthorized disclosure of sensitive information (confidentiality impact), manipulation or corruption of data (integrity impact), and disruption of service availability. Given the stored nature of the XSS, multiple users can be affected once the malicious payload is embedded, increasing the attack surface. This can lead to reputational damage, regulatory non-compliance (e.g., GDPR violations if personal data is compromised), and potential financial losses. The requirement for some privileges and user interaction limits the attack vector but does not eliminate risk, as many web applications allow authenticated users to upload or embed documents. Attackers could leverage social engineering to induce victims to interact with malicious content. The changed scope means that the vulnerability could be exploited to affect other components or users beyond the plugin, amplifying the impact. European organizations with high compliance requirements and sensitive data handling must prioritize addressing this vulnerability to prevent exploitation.

1. Immediate mitigation should include restricting document embedding capabilities to trusted and authenticated users with strict access controls to minimize the risk of malicious content upload. 2. Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. 3. Sanitize and validate all user inputs rigorously on both client and server sides, especially inputs that are used in document embedding or rendering processes. 4. Monitor and audit logs for unusual activity related to document uploads or embedding actions to detect potential exploitation attempts early. 5. Until an official patch is released, consider disabling or removing the 'Embed Any Document' plugin if feasible, or isolate it in a sandboxed environment to limit scope. 6. Educate users about the risks of interacting with untrusted embedded documents and encourage cautious behavior. 7. Once available, promptly apply vendor patches or updates addressing CVE-2025-60099. 8. Conduct regular security assessments and penetration testing focusing on web application input handling and embedded content security.