CVE-2024-39720: Ollama

High severity, CVSS 8.2. EPSS: 2.4% chance of exploitation in the next 30 days.

An issue was discovered in Ollama before 0.1.46. An attacker can use two HTTP requests to upload a malformed GGUF file containing just 4 bytes starting with the GGUF custom magic header. By leveraging a custom Modelfile that includes a FROM statement pointing to the attacker-controlled blob file, the attacker can crash the application through the CreateModel route, leading to a segmentation fault (signal SIGSEGV: segmentation violation).

Affected products

• Ollama Ollama: before 0.1.46 (fixed in 0.1.46)

Published 2024-10-31. Last modified 2026-06-17.