CVE-2026-44037

Medium

Description

Uncontrolled mutual recursion between DcmJSONReader::parseDataSet(), DcmJSONReader::parseElement() and DcmJSONReader::parseSequence() in dcmdata/libsrc/dcjsonrd.cc of OFFIS DCMTK 3.7.0 allows an attacker to cause a denial of service (stack exhaustion and process crash) via a crafted DICOM JSON document with deeply nested sequence (SQ) values. The json2dcm tool and any service that converts untrusted DICOM JSON (for example, DICOMweb payloads) with this reader are affected. The issue is fixed in commit cf955e64c35a1e07ba10698f639d5dcdec53b9d7.

SeverityMedium

CVSS5.5

Exploit probability—

ProductOffis Dcmtk

PublishedOct 8, 2026

First seenOct 8, 2026

Weakness typeCWE-674CWE-674

How to fix

Patches

github.com/DCMTK/dcmtk/commit/cf955e64c35a1e07ba10698f639d5dcdec53b9d7

Vendor advisories

support.dcmtk.org/redmine/issues/1225

Affected products

Product	Affected versions	Fixed in
offis dcmtk	3.7.0	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.