Arbitrary file read via tensor digest traversal
Published Apr 26, 2026 · Updated Apr 26, 2026
Path traversal in Ollama 0.20.0 through 0.20.2 allows remote attackers to read arbitrary host files through the model transfer API. digestToPath accepts parent-directory segments from a tensor-layer digest in a registry manifest and resolves them outside the model store. An unauthenticated attacker must operate reachable registries and know a target file's approximate size, after which copy and push requests disclose that file.
Summary
What happened
Path traversal in Ollama 0.20.0 through 0.20.2 allows remote attackers to read arbitrary host files through the model transfer API. digestToPath accepts parent-directory segments from a tensor-layer digest in a registry manifest and resolves them outside the model store. An unauthenticated attacker must operate reachable registries and know a target file's approximate size, after which copy and push requests disclose that file.
The record
- CVE
- CVE-2026-7020
- Published
- Apr 26, 2026
- Updated
- Apr 26, 2026
- Vendor
- Ollama
- Product
- Ollama
- Classifications
- CWE-22, T1005, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 26, 2026CVE publishedPublication date reported by the CVE source.
- Apr 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.20.0
- Affected versionversion=0.20.1
- Affected versionversion=0.20.2
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- CVE-2026-7020 Ollama tensor digest path traversal PoCproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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