CVE-2026-44036

Uncontrolled recursion in DCMTK xml2dcm allows denial of service

6.8 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.10%Unchanged since Oct 9, 2026

What each source reports

CVE List Score used 6.8

Uncontrolled recursion in DCMTK xml2dcm allows denial of service

Record: CVE-2026-44036
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-674
Updated: 2026-11-02

EUVDEUVD-2026-94939 6.8

Record: EUVD-2026-94939
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-hch2-45m4-65gq 6.8

Uncontrolled mutual recursion between DcmXMLParseHelper::parseDataSet() and DcmXMLParseHelper:...

Record: GHSA-hch2-45m4-65gq
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-674
Updated: 2026-11-02

NVD 6.8

Record: CVE-2026-44036
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-674
Updated: 2026-11-02

OSV 6.8

Record: CVE-2026-44036
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-44036 6.8

Record: DEBIAN-CVE-2026-44036
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-44036 6.8

Record: UBUNTU-CVE-2026-44036
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

offis dcmtk

Affected packages

Affected packages
Package	Affected	Fixed
`dcmtk` Debian:12	All versions, plus listed versions 3.6.7-113.6.7-123.6.7-133.6.7-143.6.7-15 Show 35 moreShow less 3.6.7-83.6.7-93.6.7-9.13.6.7-9~deb12u13.6.7-9~deb12u23.6.7-9~deb12u33.6.7-9~deb12u43.6.8-13.6.8-23.6.8-33.6.8-43.6.8-53.6.8-63.6.8-73.6.8~git20221024.b8950f9-13.6.8~git20221024.b8950f9-23.6.8~git20221024.b8950f9-33.6.8~git20231027.1549d8c-13.6.8~git20231027.1549d8c-23.6.9-13.6.9-23.6.9-33.6.9-43.6.9-53.6.9-63.7.0+really3.6.9-13.7.0+really3.7.0-0+exp13.7.0+really3.7.0-13.7.0+really3.7.0-23.7.0+really3.7.0-33.7.0+really3.7.0-43.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0+really3.7.0-73.7.0-1	None known
`dcmtk` Debian:13	All versions, plus listed versions 3.6.9-53.6.9-5+deb13u13.6.9-5+deb13u23.6.9-5+deb13u33.6.9-6 Show 10 moreShow less 3.7.0+really3.6.9-13.7.0+really3.7.0-0+exp13.7.0+really3.7.0-13.7.0+really3.7.0-23.7.0+really3.7.0-33.7.0+really3.7.0-43.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0+really3.7.0-73.7.0-1	None known
`dcmtk` Debian:14	All versions, plus listed versions 3.6.9-53.6.9-63.7.0+really3.6.9-13.7.0+really3.7.0-0+exp13.7.0+really3.7.0-1 Show 7 moreShow less 3.7.0+really3.7.0-23.7.0+really3.7.0-33.7.0+really3.7.0-43.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0+really3.7.0-73.7.0-1	None known
`dcmtk` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 3.6.0-15.13.6.1~20150629-53.6.1~20150924-43.6.1~20150924-53.6.1~20150924-5ubuntu0.1~esm13.6.1~20150924-5ubuntu0.1~esm23.6.1~20150924-5ubuntu0.1~esm3	None known
`dcmtk` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 3.6.2-23.6.2-2build13.6.2-33.6.2-3build13.6.2-3build2 Show 4 moreShow less 3.6.2-3build33.6.2-3ubuntu0.1~esm13.6.2-3ubuntu0.1~esm23.6.2-3ubuntu0.1~esm3	None known
`dcmtk` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 3.6.4-2.13.6.4-2.1build13.6.4-2.1build23.6.4-2.1ubuntu0.1~esm13.6.4-2.1ubuntu0.13.6.4-2.1ubuntu0.1+esm13.6.4-2.1ubuntu0.23.6.4-2.1ubuntu0.2+esm1	None known
`dcmtk` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 3.6.5-13.6.6-3ubuntu13.6.6-3ubuntu23.6.6-43.6.6-53.6.6-5ubuntu0.1~esm13.6.6-5ubuntu0.1~esm2	None known
`dcmtk` Ubuntu:Pro:24.04:LTS	All versions, plus listed versions 3.6.7-93.6.7-9.1build23.6.7-9.1build33.6.7-9.1build43.6.7-9.1ubuntu0.1~esm1	None known
`dcmtk` Ubuntu:26.10	All versions, plus listed versions 3.7.0+really3.6.9-13.7.0+really3.7.0-23.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0+really3.7.0-7ubuntu1	None known
`dcmtk` Ubuntu:26.04:LTS	All versions, plus listed versions 3.6.9-5build13.6.9-63.7.0+really3.6.9-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-44036 is a medium vulnerability (CVSS 6.8) in Offis Dcmtk, published October 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.10%, the 1st percentile. No source names a fixed version.