Vulnerability Details CVE-2026-21851
MONAI (Medical Open Network for AI) is an AI toolkit for health care imaging. In versions up to and including 1.5.1, a Path Traversal (Zip Slip) vulnerability exists in MONAI's `_download_from_ngc_private()` function. The function uses `zipfile.ZipFile.extractall()` without path validation, while other similar download functions in the same codebase properly use the existing `safe_extract_member()` function. Commit 4014c8475626f20f158921ae0cf98ed259ae4d59 fixes this issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.6%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-21851
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cpe:2.3:a:project-monai:monai:0.1.0
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cpe:2.3:a:project-monai:monai:0.2.0
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cpe:2.3:a:project-monai:monai:0.3.0
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cpe:2.3:a:project-monai:monai:0.4.0
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cpe:2.3:a:project-monai:monai:0.5.0
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cpe:2.3:a:project-monai:monai:0.5.1
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cpe:2.3:a:project-monai:monai:0.5.2
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cpe:2.3:a:project-monai:monai:0.5.3
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cpe:2.3:a:project-monai:monai:0.6.0
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cpe:2.3:a:project-monai:monai:0.7.0
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cpe:2.3:a:project-monai:monai:0.8.0
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cpe:2.3:a:project-monai:monai:0.8.1
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cpe:2.3:a:project-monai:monai:0.9.0
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cpe:2.3:a:project-monai:monai:0.9.1
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cpe:2.3:a:project-monai:monai:1.0.0
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cpe:2.3:a:project-monai:monai:1.0.1
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cpe:2.3:a:project-monai:monai:1.1.0
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cpe:2.3:a:project-monai:monai:1.2.0
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cpe:2.3:a:project-monai:monai:1.3.0
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cpe:2.3:a:project-monai:monai:1.3.1
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cpe:2.3:a:project-monai:monai:1.3.2
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cpe:2.3:a:project-monai:monai:1.3.3
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cpe:2.3:a:project-monai:monai:1.4.0
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cpe:2.3:a:project-monai:monai:1.4.1
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cpe:2.3:a:project-monai:monai:1.5.0
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cpe:2.3:a:project-monai:monai:1.5.1