CVE-2026-44036

MEDIUM 5.5

Uncontrolled recursion in DCMTK xml2dcm allows denial of service

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

Uncontrolled mutual recursion between DcmXMLParseHelper::parseDataSet() and DcmXMLParseHelper::parseSequence() in the XML-to-DICOM converter (dcmdata/libdcxml/xml2dcm.cc) of OFFIS DCMTK 3.7.0 allows an attacker to cause a denial of service (stack exhaustion and process crash) via a crafted XML file with deeply nested sequence and item elements. The xml2dcm tool and any service that converts untrusted XML to DICOM with this code are affected. The issue is fixed in commit 87f256d73e30656a822bf7d76d1cf1d9bb693954.

CWE	CWE-674
Vendor	offis
Product	dcmtk
Published	Oct 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

OFFIS / DCMTK

3.7.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

support.dcmtk.org: https://support.dcmtk.org/redmine/issues/1224 github.com: https://github.com/DCMTK/dcmtk/commit/87f256d73e30656a822bf7d76d1cf1d9bb693954

Credits

Arjun Basnet from Securin