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CVE-2026-15685

HIGH
7.5
CVSS 3.0
Description
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.

Metadata

CVE ID
CVE-2026-15685
State
PUBLISHED
Assigner
zdi
Reserved
2026-07-13 21:29 UTC
Published
2026-07-13 21:30 UTC
Last updated
2026-07-13 21:30 UTC
Primary CWE
CWE-129
CWE-129: Improper Validation of Array Index
Vendor / Product
Ollama / Ollama
Sources
cve.org  ·  NVD

Severity & Metrics

7.5 HIGH CVSS 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
Ollama Ollama — 0.7.1
Weakness (CWE)
CWESourceDescription
CWE-129 cna CWE-129: Improper Validation of Array Index
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.5 HIGH 3.0 cna CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References (1)
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