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Details of issue NIXPKGS-2026-0709

NIXPKGS-2026-0709
published 3 months ago
Permalink CVE-2026-32711
7.8 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Local (L)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): Required (R)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Local (L)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): Required (R)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): High (H)
updated 3 months ago by @LeSuisse Activity log
  • Created suggestion 3 months ago
  • @LeSuisse accepted 3 months ago
  • @LeSuisse published on GitHub 3 months ago
pydicom: Path traversal in FileSet/DICOMDIR ReferencedFileID allows file access outside the File-set root

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.

Affected products

pydicom
  • ==>= 2.0.0-rc.1, < 3.0.2

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/pydicom/pydicom/security/advisories/GHSA-v856-2rf8-9f28
Upstream patch: https://github.com/pydicom/pydicom/commit/6414f01a053dff925578799f5a7208d2ae585e82