Download of Code Without Integrity Check Affecting ollama package, versions <0.17.6-r0


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-OLLAMA-16761775
  • published20 May 2026
  • disclosed29 Apr 2026

Introduced: 29 Apr 2026

CVE-2026-42248  (opens in a new tab)
CWE-494  (opens in a new tab)

How to fix?

Upgrade Minimos:latest ollama to version 0.17.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ollama package and not the ollama package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Ollama for Windows does not perform integrity or authenticity verification of downloaded update executables. Unlike other platforms, the Windows implementation of the update verification routine unconditionally returns success so no digital signature or trust validation is performed before staging or executing update payloads, enabling attacker‑supplied executables to be accepted and later executed by the application.

Critically, Ollama for Windows performs silent automatic updates, so the malicious payload may be installed automatically without user awareness.

Maintainers of this project were notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Versions from 0.12.10 to 0.17.5 were tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

CVSS Base Scores

version 3.1