CVE-2025-1975: Ollama Server Vulnerable to Denial of Service (DoS) Attack

May 16, 2025 (updated May 22, 2025)

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.

References

github.com/advisories/GHSA-wrh5-cmwx-q2qr
github.com/ollama/ollama
huntr.com/bounties/921ba5d4-f1d0-4c66-9764-4f72dffe7acd
nvd.nist.gov/vuln/detail/CVE-2025-1975
pkg.go.dev/vuln/GO-2025-3695

Code Behaviors & Features

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