Skip to content
Fencer Vulns
high 7.8

CVE-2026-32711 json

pydicom: Path traversal in FileSet/DICOMDIR ReferencedFileID allows file access outside the File-set root

published 2026-03-20 7 mo ago modified 2026-07-13 3 mo ago also GHSA-v856-2rf8-9f28 , PYSEC-2026-2266 , EUVD-2026-13433

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi pydicom 2.4.5, 3.0.2
  • pydicom pydicom 3.0.2
  • pydicom Debian 14 3.0.2-1

debian advisories DEBIAN-CVE-2026-32711

  • python-pydicom openSUSE Tumbleweed 3.0.2-1.1

opensuse advisories openSUSE-SU-2026:10412-1

  • py3-pydicom Alpine 3.24, Alpine 3.23 3.0.2-r0

alpine advisories ALPINE-CVE-2026-32711

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
7 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/pydicom/pydicom/security/advisories/GHSA-v856-2rf8-9f28 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitHub 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pydicom
>=3.0.0, <3.0.2
<2.4.5
>=2.0.0, <3.0.2
3.0.2
2.4.5

Affected products

  • pydicom pydicom

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.