This blog details research and analysis of an active campaign that exploits a critical unauthenticated remote code execution (RCE) vulnerability, CVE-2025-3248, that has been identified in Langflow versions prior to 1.3.0. Langflow is a Python-powered visual framework for building AI applications with over 70,000 GitHub stars, and its versions prior to 1.3.0 contains a flaw in its code validation mechanism that permits arbitrary code execution.
Unauthenticated attackers can exploit this vulnerability by crafting malicious POST requests to the /api/v1/validate/code endpoint. The malicious payload in our investigation was found embedded within argument defaults or decorators of a Python function definition. Since Langflow does not enforce input validation or sandboxing, these payloads are compiled and executed within the server’s context, leading to RCE.
Read more…
Source: Trend Micro
Sign up for our Newsletter
The latest news and insights delivered right to your inbox.
Related:
- Mirai and Hoaxcalls Botnets Target Legacy Symantec Web Gateways
May 14, 2020
As part of Unit 42’s efforts to proactively monitor threats circulating in the wild, I recently came across new Hoaxcalls and Mirai botnet campaigns targeting a post-authentication Remote Code Execution vulnerability in Symantec Secure Web Gateway 5.0.2.8, which is a product that became end-of-life (EOL) in 2015 and end-of-support-life (EOSL) in 2019. There is no ...
- Login with Facebook Bug Earns $20K Bounty
May 14, 2020
Facebook has awarded a security researcher $20,000 for discovering a cross-site scripting (XSS) vulnerability in the Facebook Login SDK, which is used by developers to add a “Continue with Facebook” button to a page as an authentication method. Exploitation could allow threat actors to hijack accounts. Security researcher Vinoth Kumar identified a Document Object Model-based (DOM) ...
- QNodeService: Node.js Trojan Spread via Covid-19 Lure
May 14, 2020
We recently noticed a Twitter post by MalwareHunterTeam that showed a Java downloader with a low detection rate. Its name, “Company PLP_Tax relief due to Covid-19 outbreak CI+PL.jar”, suggests it may have been used in a Covid-19-themed phishing campaign. Running this file led to the download of a new, undetected malware sample written in Node.js; this trojan ...
- Thunderbolt flaws affect millions of computers – even locking unattended devices won’t help
May 11, 2020
A Dutch researcher has detailed nine attack scenarios that work against all computers with Thunderbolt shipped since 2011 and which allow an attacker with physical access to quickly steal data from encrypted drives and memory. Researcher Björn Ruytenberg detailed the so-called Thunderspy attacks in a report published on Sunday, warning that the attacks work even when users ...
- Oracle: Unpatched Versions of WebLogic App Server Under Active Attack
May 4, 2020
Oracle is urging customers to fast-track a patch for a critical flaw in its WebLogic Server under active attack. The company said it has received numerous reports that attackers were targeting the vulnerability patched last month. Oracle WebLogic Server is a popular application server used in building and deploying enterprise Java EE applications. The server has a remote ...
- Airplane Hack Exposes Weaknesses of Alert and Avoidance Systems
May 4, 2020
The aircraft safety system known as the Traffic Alert and Collision Avoidance System (TCAS) can be coerced into sending an airplane on a mid-air rollercoaster ride – much to the horror of those onboard. Researchers were able to cobble together an effective method for spoofing the TCAS using a $10 USB-based Digital Video Broadcasting dongle and ...