CVE-2024-38789 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the Marco Milesi Telegram Bot & Channel software, affecting all versions up to and including 3.8.2. CSRF vulnerabilities occur when a web application or service fails to properly verify that requests originate from legitimate users, allowing attackers to craft malicious requests that execute actions on behalf of authenticated users without their knowledge. In this case, the Telegram Bot & Channel software does not implement sufficient anti-CSRF protections, such as CSRF tokens or strict origin checks, enabling attackers to exploit this weakness. An attacker can lure a victim who is authenticated with the bot into visiting a specially crafted webpage or clicking a malicious link, which then triggers unauthorized commands or actions within the bot or channel context. This can lead to unauthorized message posting, configuration changes, or other bot operations that the attacker controls indirectly. The vulnerability does not require bypassing authentication since the victim must already be logged in, but it exploits the trust relationship between the user and the bot. No public exploits have been reported yet, and no official patches or mitigation links are provided at this time. The vulnerability was reserved in June 2024 and published in January 2025. The absence of a CVSS score necessitates a severity assessment based on impact and exploitability factors.

The primary impact of CVE-2024-38789 is the unauthorized execution of commands or actions within the Marco Milesi Telegram Bot & Channel environment by exploiting the victim’s authenticated session. This can compromise the integrity of the bot’s operations, allowing attackers to manipulate messages, alter settings, or perform other privileged actions without user consent. Confidentiality impact is limited since the vulnerability does not directly expose sensitive data, but integrity and availability could be significantly affected if attackers disrupt bot functionality or inject malicious content. Organizations using this bot for critical communication, automation, or customer interaction may face operational disruptions, reputational damage, or indirect security risks if attackers leverage the bot to propagate misinformation or malicious payloads. The ease of exploitation via social engineering and the broad deployment of Telegram bots globally increase the threat surface. Although no known exploits exist currently, the vulnerability presents a clear risk that could be weaponized in targeted or widespread attacks.

To mitigate CVE-2024-38789, developers and administrators of the Marco Milesi Telegram Bot & Channel should implement robust anti-CSRF protections, including the use of unique, unpredictable CSRF tokens embedded in all state-changing requests. Additionally, validating the HTTP Referer or Origin headers to ensure requests originate from trusted sources can reduce risk. Updating the bot software to a patched version once available is critical. Until patches are released, administrators should restrict bot access to trusted users and channels, monitor for unusual activity, and educate users about the risks of clicking unsolicited links while authenticated. Employing web application firewalls (WAFs) with custom rules to detect and block suspicious CSRF attempts can provide an additional layer of defense. Regular security audits and penetration testing focused on CSRF and related web vulnerabilities will help identify and remediate similar issues proactively.