CVE-2026-103663

Ollama is vulnerable to path traversal in the `/api/pull` endpoint due to insufficient validation of layer digests by the `digestToPath` function. An unauthenticated remote attacker can specify a path traversal sequence as a layer digest, causing a malicious binary to be written outside the model store. Critically if the server process has write access to `/usr/lib/ollama` (the default in most Ollama Docker images), an attacker can write the malicious file to that directory. On the next server restart, the file is loaded and executed, resulting in remote code execution as root. This issue was fixed in version 0.35.0.

CVSS

No CVSS.

References

Link	Resource
https://cert.pl/en/posts/2026/10/CVE-2026-103663/
https://ollama.com/

Configurations

No configuration.

History

08 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 14:16

Updated : 2026-10-08 20:08

NVD link : CVE-2026-103663

Mitre link : CVE-2026-103663

CVE.ORG link : CVE-2026-103663

JSON object : View

Products Affected

No product.

CWE

CWE-23

Relative Path Traversal

CWE-913

Improper Control of Dynamically-Managed Code Resources

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