Path Traversal in Pydicom Pynetdicom Library

CVE-2026-56445

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.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-56445?
CVE-2026-56445 is a critical-severity vulnerability in Pydicom Pynetdicom Library, classified under Path Traversal. CVSS score: 9.1/10. Published 2026-06-25.
How severe is CVE-2026-56445?
Critical severity. CVSS v3 base score is 9.1 out of 10.