CVE WatchJul 21, 2026

CVE-2026-65315

Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to c

CVSS

7.5

High

EPSS

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KEV

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Exploit Today

0-100

Published: Jul 21, 2026 · Last modified: Jul 21, 2026 · CWE-789

EPSS · 30d

Not enough EPSS history yet.

Technical description

Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attacker-controlled length and count fields in string lengths, tensor dimension counts, and metadata array counts that are used as allocation sizes without validation against remaining file size. Attackers can upload a sub-1KB crafted GGUF file via the blob upload and model create or pull API endpoints to trigger unrecoverable Go runtime out-of-memory fatal errors or makeslice panics that bypass recovery middleware and crash the entire server process.

Official references

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