Vulnerability Details CVE-2026-32711
pydicom is a pure Python package for working with DICOM files. Versions 2.0.0-rc.1 through 3.0.1 are vulnerable to Path Traversal through a maliciously crafted DICOMDIR ReferencedFileID when it is set to a path outside the File-set root. pydicom resolves the path only to confirm that it exists, but does not verify that the resolved path remains under the File-set root. Subsequent public FileSet operations such as copy(), write(), and remove()+write(use_existing=True) use that unchecked path in file I/O operations. This allows arbitrary file read/copy and, in some flows, move/delete outside the File-set root. This issue has been fixed in version 3.0.2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.6%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2026-32711
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cpe:2.3:a:pydicom:pydicom:2.0.0
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cpe:2.3:a:pydicom:pydicom:2.1.0
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cpe:2.3:a:pydicom:pydicom:2.1.1
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cpe:2.3:a:pydicom:pydicom:2.1.2
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cpe:2.3:a:pydicom:pydicom:2.2.0
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cpe:2.3:a:pydicom:pydicom:2.2.1
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cpe:2.3:a:pydicom:pydicom:2.2.2
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cpe:2.3:a:pydicom:pydicom:2.3.0
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cpe:2.3:a:pydicom:pydicom:2.3.1
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cpe:2.3:a:pydicom:pydicom:2.4.0
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cpe:2.3:a:pydicom:pydicom:2.4.1
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cpe:2.3:a:pydicom:pydicom:2.4.2
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cpe:2.3:a:pydicom:pydicom:2.4.3
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cpe:2.3:a:pydicom:pydicom:2.4.4
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cpe:2.3:a:pydicom:pydicom:2.4.5
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cpe:2.3:a:pydicom:pydicom:3.0.0
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cpe:2.3:a:pydicom:pydicom:3.0.1