Improper Validation of Array Index in Ollama by Ollama Corp
CVE-2026-15685

7.5HIGH

Key Information:

Vendor

Ollama

Status
Ollama
Vendor
CVE Published:
13 July 2026

What is CVE-2026-15685?

The vulnerability within the downloadBlob function in Ollama arises from inadequate validation of user-supplied data. This flaw can lead to memory access issues that trigger a denial-of-service condition. Attackers can exploit this weakness without requiring authentication, resulting in system disruption. The lack of robust input validation creates a significant security risk for installations of Ollama, necessitating prompt remediation to protect against potential exploitation.

Affected Version(s)

Ollama 0.7.1

References

https://www.zerodayinitiative.com/advisories/ZDI-26-403/
x_research-advisory

CVSS V3.0

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.