CVE-2025-50013 is a stored Cross-site Scripting (XSS) vulnerability classified under CWE-79, affecting the Jason Judge CSV Importer Improved plugin up to version 0.6.1. The vulnerability arises due to improper neutralization of input during web page generation, allowing malicious input embedded in CSV files to be stored and later executed in the context of a user's browser when the data is rendered. This stored XSS can lead to unauthorized script execution, potentially enabling attackers to hijack user sessions, deface websites, or perform actions on behalf of authenticated users. The CVSS 3.1 base score is 5.9 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring high privileges (PR:H), user interaction (UI:R), scope change (S:C), and low impact on confidentiality, integrity, and availability (C:L/I:L/A:L). The requirement for high privileges and user interaction suggests exploitation is limited to authenticated users with elevated permissions who interact with maliciously crafted CSV files. No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability affects the CSV Importer Improved plugin, which is used to import CSV data into web applications, likely content management systems or similar platforms that rely on this plugin for data ingestion and display.

For European organizations, this vulnerability poses a moderate risk primarily to web applications using the Jason Judge CSV Importer Improved plugin. If exploited, attackers could execute arbitrary scripts in the browsers of privileged users, potentially leading to session hijacking, unauthorized actions, or data manipulation. The impact is heightened in environments where the plugin is used to import sensitive or critical data, such as financial records, personal data, or operational information. Given the requirement for high privileges, the threat mainly concerns internal users or attackers who have already gained elevated access, increasing the risk of insider threats or lateral movement within networks. The scope change (S:C) indicates that exploitation could affect resources beyond the vulnerable component, potentially impacting broader application integrity. European organizations in sectors like government, finance, healthcare, and critical infrastructure that rely on this plugin for data importation could face operational disruptions or data breaches if the vulnerability is exploited. However, the absence of known exploits and the medium severity score suggest that immediate widespread impact is limited but should not be underestimated.

1. Restrict access to the CSV Importer Improved plugin to only the minimum necessary privileged users to reduce the attack surface. 2. Implement strict input validation and sanitization on CSV data before import, ensuring that any embedded scripts or malicious payloads are neutralized. 3. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in the web application context. 4. Monitor and audit CSV import activities, especially those performed by high-privilege users, to detect anomalous or suspicious behavior. 5. Isolate the import functionality in a sandboxed environment or separate subsystem to contain potential exploitation impact. 6. Stay updated with vendor advisories and apply patches promptly once available. 7. Educate privileged users about the risks of importing untrusted CSV files and enforce policies to verify the source and integrity of data files before import. 8. Consider implementing multi-factor authentication (MFA) for users with high privileges to reduce the risk of compromised accounts being used to exploit this vulnerability.