CVE-2025-13068 is a stored Cross-Site Scripting (XSS) vulnerability identified in the milmor Telegram Bot & Channel plugin for WordPress, affecting all versions up to and including 4.1. The vulnerability stems from improper neutralization of input during web page generation, specifically due to insufficient sanitization and output escaping of the Telegram username field. This flaw allows unauthenticated attackers to inject arbitrary JavaScript code into pages generated by the plugin. When other users access these pages, the malicious scripts execute in their browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim user. The vulnerability has a CVSS 3.1 base score of 7.2, indicating high severity, with an attack vector of network (remote exploitation), low attack complexity, no privileges required, no user interaction needed, and a scope change affecting confidentiality and integrity. Although no known exploits are currently reported in the wild, the public disclosure and ease of exploitation make it a significant threat. The plugin is widely used to integrate Telegram functionalities into WordPress sites, which are popular across Europe. The vulnerability's exploitation could impact the confidentiality and integrity of user data and site content, though it does not directly affect availability. The lack of patches at the time of disclosure means that organizations must rely on mitigation strategies such as input validation, output encoding, and WAF rules to reduce risk. Monitoring and scanning for vulnerable plugin versions is critical to prevent exploitation.

For European organizations, this vulnerability poses a significant risk to websites using the milmor Telegram Bot & Channel plugin on WordPress. Exploitation can lead to theft of sensitive user information, including session cookies and credentials, enabling attackers to impersonate users or escalate privileges. This can result in unauthorized access to internal systems or data breaches, undermining trust and potentially violating GDPR requirements for data protection. The integrity of website content can also be compromised, damaging organizational reputation. Since the attack requires no authentication or user interaction, the threat surface is broad, affecting any visitor to the compromised pages. Given the widespread use of WordPress and Telegram integrations in Europe, especially in sectors like media, e-commerce, and public services, the impact could be extensive. Additionally, attackers could leverage this vulnerability as a foothold for further attacks, including phishing or malware distribution. The lack of known exploits in the wild currently provides a window for proactive defense, but the risk remains high due to the vulnerability's characteristics.

1. Immediate inventory and identification of WordPress sites using the milmor Telegram Bot & Channel plugin, especially versions up to 4.1. 2. Apply patches or updates as soon as they become available from the vendor; monitor official channels for release announcements. 3. In the absence of patches, implement strict input validation and output encoding on the Telegram username field to neutralize malicious scripts. 4. Deploy Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting this plugin. 5. Conduct regular vulnerability scans focusing on WordPress plugins and monitor logs for suspicious activities related to Telegram username inputs. 6. Educate site administrators and developers about secure coding practices, emphasizing proper sanitization and escaping of user inputs. 7. Consider temporarily disabling the plugin if it is not critical to operations until a secure version is available. 8. Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 9. Monitor threat intelligence feeds for emerging exploit attempts targeting this vulnerability. 10. Review user privileges and session management policies to limit the impact of potential session hijacking.