CVE-2026-56445 pydicom pynetdicom Library Path Traversal
Attackers can write files to arbitrary paths via unsanitized DICOM dataset inputs in the pynetdicom library's C-STORE handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56445?
CVE-2026-56445 is a high-severity path traversal vulnerability in pydicom pynetdicom Library, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-56445?
How do I fix CVE-2026-56445?
No fix has been published for CVE-2026-56445 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-56445 being exploited?
There is no known exploitation of CVE-2026-56445 in the wild and no public exploit code.
Sources
Also known as GHSA-f3pc-ww42-cwqp.