CVE-2026-15685 (GCVE-0-2026-15685)

Vulnerability from cvelistv5 – Published: 2026-07-13 21:30 – Updated: 2026-07-14 13:05
VLAI
Title
Ollama downloadBlob Improper Validation of Array Index Denial-of-Service Vulnerability
Summary
Ollama downloadBlob Improper Validation of Array Index Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Ollama. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloadBlob function. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated array. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-27277.
Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 13:05 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
Assigner
zdi CNA under the mitre root
CNA scorecard C 73/100 over 109 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Ollama Ollama Affected: 0.7.1
guessed Create a notification for this product.
Date Public
2026-07-13 21:30
Show details on NVD website
To clipboard 

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