[2603.29216] Software Vulnerability Detection Using a Lightweight Graph Neural Network

Computer Science > Software Engineering arXiv:2603.29216 (cs) [Submitted on 31 Mar 2026] Title:Software Vulnerability Detection Using a Lightweight Graph Neural Network Authors:Miles Farmer, Ekincan Ufuktepe, Anne Watson, Hialo Muniz Carvalho, Vadim Okun, Zineb Maasaoui, Kannappan Palaniappan View a PDF of the paper titled Software Vulnerability Detection Using a Lightweight Graph Neural Network, by Miles Farmer and 6 other authors View PDF HTML (experimental) Abstract:Large Language Models (LLMs) have emerged as a popular choice in vulnerability detection studies given their foundational capabilities, open source availability, and variety of models, but have limited scalability due to extensive compute requirements. Using the natural graph relational structure of code, we show that our proposed graph neural network (GNN) based deep learning model VulGNN for vulnerability detection can achieve performance almost on par with LLMs, but is 100 times smaller in size and fast to retrain and customize. We describe the VulGNN architecture, ablation studies on components, learning rates, and generalizability to different code datasets. As a lightweight model for vulnerability analysis, VulGNN is efficient and deployable at the edge as part of real-world software development pipelines. Comments: Subjects: Software Engineering (cs.SE); Artificial Intelligence (cs.AI); Cryptography and Security (cs.CR); Machine Learning (cs.LG) Cite as: arXiv:2603.29216 [cs.SE]   (or arXiv:2603.29216...