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OpenAdvisories
Critical · 9.3 CVE-2026-48705 EUVD-2026-117795GHSA-6hp3-vr39-rqw8

MONAI: MONAILabel Server Crash and Silent Inference Corruption via Crafted DICOM (pydicom DS/IS Validation Bypass)

Published Nov 5, 2026 · Updated Nov 5, 2026 · Assigned by GitHub_M

Description

MONAI (Medical Open Network for AI) is an AI toolkit for health care imaging. Prior to 1.6.1, PydicomReader._get_affine() trusts non-finite values in the DICOM PixelSpacing, ImagePositionPatient, and ImageOrientationPatient fields and composes them into an affine matrix without validation. An unauthenticated attacker who can upload a crafted DICOM to a default MONAILabel deployment can propagate NaN or infinity values through LoadImaged, Spacingd, model inference, and output writing, causing inference failures, persistent datastore poisoning, or geometrically corrupted results. This issue is fixed in version 1.6.1.

Affected products

VendorProductAffectedFixed
Project-MONAI MONAI < 1.6.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI monai < 1.6.1 1.6.1 GHSA-6hp3-vr39-rqw8

References