A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large `Content-Length` value can trigger excessive memory allocation and server termination, even without sending a request body.
History

Wed, 15 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
CWE-789

Tue, 14 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Orthanc-server
Orthanc-server orthanc
Weaknesses CWE-770
CPEs cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*
Vendors & Products Orthanc-server
Orthanc-server orthanc

Tue, 14 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 10:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
CWE-789

Fri, 10 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Orthanc
Orthanc dicom Server
Vendors & Products Orthanc
Orthanc dicom Server

Thu, 09 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Description A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large `Content-Length` value can trigger excessive memory allocation and server termination, even without sending a request body.
Title Memory Exhaustion via Unbounded Content-Length
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-04-09T14:43:55.684Z

Updated: 2026-04-14T16:34:31.991Z

Reserved: 2026-04-02T19:22:26.410Z

Link: CVE-2026-5440

cve-icon Vulnrichment

Updated: 2026-04-14T15:12:41.250Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T15:16:16.337

Modified: 2026-04-14T20:26:57.417

Link: CVE-2026-5440

cve-icon Redhat

No data.