Uncontrolled recursion in DCMTK JSON reader allows denial of service
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.
CVE-2026-44037
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-44037
DCMTK
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"cpes": [
"cpe:2.3:a:offis:dcmtk:3.7.0:*:*:*:*:*:*:*"
],
"repo": "https://github.com/DCMTK/dcmtk",
"vendor": "OFFIS",
"modules": [
"dcmdata"
],
"product": "DCMTK",
"versions": [
{
"status": "affected",
"version": "3.7.0"
}
],
"programFiles": [
"dcmdata/libsrc/dcjsonrd.cc"
],
"collectionURL": "https://github.com/DCMTK/dcmtk",
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-44037
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12529 · Revision 1
- Added to Heist Feed
- Publisher date