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1 vulnerability

CVE-2026-7482 (GCVE-0-2026-7482)

Vulnerability from cvelistv5 – Published: 2026-05-04 12:38 – Updated: 2026-05-04 13:48 X_Unauthenticated X_Remote X_Information Disclosure
VLAI?
Title
Ollama heap out-of-bounds read in GGUF tensor parsing leaks server process memory to unauthenticated remote attackers
Summary
Ollama before 0.17.1 contains a heap out-of-bounds read vulnerability in the GGUF model loader. The /api/create endpoint accepts an attacker-supplied GGUF file in which the declared tensor offset and size exceed the file's actual length; during quantization in fs/ggml/gguf.go and server/quantization.go (WriteTo()), the server reads past the allocated heap buffer. The leaked memory contents may include environment variables, API keys, system prompts, and concurrent users' conversation data, and can be exfiltrated by uploading the resulting model artifact through the /api/push endpoint to an attacker-controlled registry. The /api/create and /api/push endpoints have no authentication in the upstream distribution. Default deployments bind to 127.0.0.1, but the documented OLLAMA_HOST=0.0.0.0 configuration is widely used in practice (large public-internet exposure observed).
Severity ?
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/AU:Y/R:A/V:D/RE:L/U:Red
CWE
Assigner
References
Impacted products
Vendor Product Version
ollama ollama Affected: 0 , < 0.17.1 (semver)
Create a notification for this product.
Date Public ?
2026-02-25 00:00
Credits
Cyera Research Team (Dor Attias, Ofek Itach)
Show details on NVD website
To clipboard 

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