A significant security breach has emerged as the Flodrix botnet exploits a critical vulnerability in the Langflow AI framework, particularly targeting versions prior to 1.3.0. This vulnerability, cataloged as CVE-2025-3248, allows unauthenticated attackers to execute arbitrary code on Langflow servers via crafted HTTP requests. The ramifications are severe; once compromised, these servers can be utilized to deploy downloader scripts that install the Flodrix malware.
The vulnerability stems from inadequate authentication controls in the Langflow framework, a popular open-source tool used extensively within the AI community, boasting over 70,000 stars on GitHub. After the patch for the vulnerability was released in March 2025, proof-of-concept exploit code became publicly available almost immediately, increasing the urgency for users to upgrade. Successful exploitation of unpatched servers not only compromises critical AI workflows but similarly integrates them into the Flodrix botnet, facilitating coordinated attacks as it exposes sensitive data. Authentication controls are crucial in preventing such abuses, making rapid remediation essential. Additionally, the critical flaw has a CVSS score of 9.8, signifying its severe risk level.
The Langflow framework’s inadequate authentication controls expose users to critical vulnerabilities, emphasizing the urgent need for immediate upgrades.
Publicly accessible Langflow instances are at heightened risk, as they allow easy targeting by attackers. Once hijacked, the infected AI servers can execute Distributed Denial of Service (DDoS) attacks, thereby disrupting services.
The botnet’s infrastructure includes command and control servers that manage the compromised nodes, while reconnaissance commands help gather system information for further exploit use. Evidence from cybersecurity firms, such as Trend Micro and CISA, suggests that exploit attempts are rampant, with specific monitoring and detection efforts underway.
Organizations are advised to upgrade to Langflow version 1.3.0 or later to mitigate these risks. Security campaigns are emphasizing the significance of patching and tightening public endpoint exposure to safeguard AI infrastructure.
Trends indicate that proper vigilance and swift action following the emergence of new vulnerabilities are crucial in combating the exploitation of critical systems like Langflow, preventing further damage from botnets such as Flodrix.
