CVE-2026-85180: Ollama 0.30.0 through 0.33.2 SSRF via Cross-Host Tensor Blob Redirect

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-03 · updated 2026-09-10
Weakness: CWE-918

Description

Ollama fails to validate redirect destinations when pulling tensor-layer models, allowing unauthenticated attackers to redirect blob downloads to arbitrary hosts. An attacker can control a registry, serve a malicious tensor-layer manifest, and cause the server to issue GET requests to internal hosts including cloud metadata endpoints.

Affected products

Ollama: from 0.30.0 through 0.33.2

References

https://github.com/ollama/ollama
https://github.com/ollama/ollama/blob/v0.33.2/x/transfer/download.go
https://github.com/ollama/ollama/issues/17041
https://www.vulncheck.com/advisories/ollama-0.30.0-through-0.33.2-ssrf-via-cross-host-tensor-blob-redirect

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