affected:
- ecosystem_specific: {}
  package:
    ecosystem: PyPI
    name: ollama
    purl: pkg:pypi/ollama
  ranges:
  - events:
    - introduced: '0'
    - last_affected: 0.5.11
    type: ECOSYSTEM
  versions:
  - 0.0.0
  - 0.0.1
  - 0.1.0
  - 0.1.2
  - 0.1.3
  - 0.1.4
  - 0.1.5
  - 0.1.6
  - 0.1.7
  - 0.1.8
  - 0.1.9
  - 0.2.0
  - 0.2.1
  - 0.3.0
  - 0.3.1
  - 0.3.2
  - 0.3.3
  - 0.4.0
  - 0.4.1
  - 0.4.2
  - 0.4.3
  - 0.4.4
  - 0.4.5
  - 0.4.6
  - 0.4.7
  - 0.4.8
  - 0.4.9
  - 0.5.0
  - 0.5.1
  - 0.5.2
  - 0.5.3
  - 0.5.4
aliases:
- CVE-2025-1975
details: 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.
id: PYSEC-2025-145
modified: '2026-05-21T14:54:36.519334Z'
published: '2025-05-16T09:15:17.980Z'
withdrawn: '2026-06-10T11:00:00Z'
references:
- type: EVIDENCE
  url: https://huntr.com/bounties/921ba5d4-f1d0-4c66-9764-4f72dffe7acd
severity:
- score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  type: CVSS_V3