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CVE-2026-44033

Uncontrolled recursion in the DCMTK bundled XML parser allows denial of service

6.8 Medium

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

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
90%50%10%1%

What each source reports

CVE List Score used 6.8

Uncontrolled recursion in the DCMTK bundled XML parser allows denial of service

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
CVE-2026-44033
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-2026-94936 6.8

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
EUVD-2026-94936
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-g7gr-959v-68f6 6.8

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled...

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
GHSA-g7gr-959v-68f6
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

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
CVE-2026-44033
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

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
CVE-2026-44033
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-2026-44033 6.8

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
DEBIAN-CVE-2026-44033
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-2026-44033 6.8

Uncontrolled recursion in XMLNode::ParseXMLElement() and XMLNode::emptyTheNode() in the bundled XML parser (ofstd/libsrc/ofxml.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 document with deeply nested elements. The parser is reachable through dcmencap when encapsulating a CDA document, and through any application that calls OFXMLParser::parseFile() or OFXMLParser::parseString() on untrusted input. The issue is fixed in commit d12e350e687530eb41e2b0c860aff4d8c04e5941.

Record
UBUNTU-CVE-2026-44033
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

Affected packages

Affected packages
PackageAffectedFixed
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
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2026-44033 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.

References

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