CVE-2026-56445

pydicom pynetdicom Library Path Traversal

Published Jun 25, 2026 CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
Description
The qrscp application's C-STORE handler uses a specific instance from attacker-supplied DICOM datasets directly in os.path.join() without sanitization, allowing file writes to arbitrary paths.

Remediation

Vendor Workaround

The maintainer of pynetdicom has not responded to requests to work with CISA to mitigate this vulnerability. For update information, refer to the github page [https://github.com/pydicom/pynetdicom](https://github.com/pydicom/pynetdicom).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Pydicom
Pydicom pynetdicom Library
Vendors & Products Pydicom
Pydicom pynetdicom Library
Type Values Removed Values Added
Description The qrscp application's C-STORE handler uses a specific instance from attacker-supplied DICOM datasets directly in os.path.join() without sanitization, allowing file writes to arbitrary paths.
Title pydicom pynetdicom Library Path Traversal
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Jun 26, 2026, 1:05 PM
Reserved
Jun 22, 2026, 3:47 PM
Status
Deferred
Published
Jun 25, 2026, 9:16 PM
Modified
Oct 25, 2026, 10:10 PM