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09/07/2026
Zero-Day Initiative

ZDI-26-403: (0Day) Ollama downloadBlob Improper Validation of Array Index Denial-of-Service Vulnerability

by Deepanshu Jha
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 ZDI has assigned a CVSS rating of 7.5.
  • Next CISA Warns About Langflow Authorization Bypass Vulnerability Exploitation (CVE-2026-55255)
  • Previous ZDI-26-402: (0Day) Glarysoft Glary Utilities Link Following Local Privilege Escalation Vulnerability

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