PT-2026-26507 · Pydicom · Pydicom

Published 2026-03-20 · Updated 2026-03-20 · CVE-2026-32711

NVD

CVSS v3.1

7.8

High

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-32711

Affected Products

Pydicom

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-32711 · Security Note
• https://github.com/pydicom/pydicom/commit/6414f01a053dff925578799f5a7208d2ae585e82 · Note
• https://github.com/pydicom/pydicom/security/advisories/GHSA-v856-2rf8-9f28 · Note
• https://github.com/pydicom/pydicom/releases/tag/v3.0.2 · Note