CVE-2025-13068 is a stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the milmor Telegram Bot & Channel plugin for WordPress in all versions up to 4.1. The root cause is insufficient sanitization and escaping of the Telegram username input, which is embedded into web pages generated by the plugin. This flaw allows unauthenticated attackers to inject arbitrary JavaScript code that is stored persistently and executed in the browsers of any users who visit the affected pages. Because the vulnerability does not require authentication or user interaction, it can be exploited remotely and silently. The CVSS 3.1 base score of 7.2 reflects a high-severity issue with network attack vector, low attack complexity, no privileges required, no user interaction, and a scope change due to the impact on other components. The consequences include partial confidentiality and integrity loss, such as theft of cookies, session tokens, or execution of malicious actions on behalf of users. Although no public exploits have been reported yet, the vulnerability's presence in a popular WordPress plugin used to integrate Telegram functionality increases the risk of exploitation. The plugin’s integration with Telegram usernames, which are user-controlled inputs, makes it a prime vector for injection attacks. The vulnerability affects all versions up to 4.1, and no official patches have been linked yet, highlighting the urgency for mitigation. The issue was publicly disclosed on November 25, 2025, by Wordfence, a reputable security vendor. Given the widespread use of WordPress in Europe and the popularity of Telegram, this vulnerability poses a significant threat to websites relying on this plugin for Telegram integration.

For European organizations, the impact of CVE-2025-13068 can be substantial. Websites using the milmor Telegram Bot & Channel plugin are at risk of persistent XSS attacks, which can lead to unauthorized access to user sessions, theft of sensitive data, and potential defacement or redirection of web content. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR breaches due to data exposure), and cause financial losses. Public-facing websites with high traffic or those handling sensitive user information are particularly vulnerable. The ability for unauthenticated attackers to exploit this vulnerability remotely increases the likelihood of widespread attacks. Additionally, the scope change in the CVSS vector indicates that the vulnerability can affect components beyond the plugin itself, potentially compromising the entire WordPress site. European sectors such as e-commerce, media, government portals, and NGOs that use Telegram integration may face targeted exploitation. The absence of known exploits in the wild currently provides a window for proactive defense, but the risk of future exploitation remains high.

1. Monitor official channels of the milmor plugin vendor for security patches and apply them immediately upon release. 2. Until patches are available, implement strict input validation on the Telegram username field to reject suspicious or script-like inputs. 3. Apply output encoding/escaping techniques on all user-supplied data rendered in web pages to prevent script execution. 4. Use Web Application Firewalls (WAFs) with rules targeting XSS payloads to block malicious requests. 5. Conduct regular vulnerability scans and penetration tests focusing on WordPress plugins, especially those handling user inputs. 6. Educate site administrators and developers about secure coding practices and the risks of stored XSS. 7. Limit plugin usage to trusted environments and consider disabling or replacing the plugin if immediate patching is not feasible. 8. Monitor web server logs and user reports for signs of suspicious activity or exploitation attempts. 9. Employ Content Security Policy (CSP) headers to restrict script execution sources, mitigating impact if exploitation occurs. 10. Backup website data regularly to enable quick recovery in case of compromise.