CVE-2026-5440
HIGH EPSS 42.7%
Published Apr 9, 20262mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
Published Apr 9, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
42.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-770
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| orthanc-server | orthanc | * | <1.12.11 |
References 3
- kb.cert.org https://kb.cert.org/vuls/id/536588
- machinespirits.de https://www.machinespirits.de/
- orthanc-server.com https://www.orthanc-server.com/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.