CVE-2025-1975
HIGH7.5EPSS 0.50%Ollama Server Vulnerable to Denial of Service (DoS) Attack in github.com/ollama/ollama
Published: 5/16/2025Modified: 5/21/2026
Description
A vulnerability in the Ollama server version 0.5.11 allows a malicious user to cause a Denial of Service (DoS) attack by customizing the manifest content and spoofing a service. This is due to improper validation of array index access when downloading a model via the /api/pull endpoint, which can lead to a server crash.
Affected packages (3)
- Go/github.com/ollama/ollamafrom 0, <= 0.5.11
- Go/github.com/ollama/ollamafrom 0
- PyPI/ollamafrom 0, <= 0.5.11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |