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I. Basic Information for CVE-2026-5440
Vulnerability Information

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Vulnerability Title
Memory Exhaustion via Unbounded Content-Length
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Orthanc 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Orthanc是Orthanc公司的一款免费的开源软件。 Orthanc存在安全漏洞,该漏洞源于HTTP服务器由于无限制使用Content-Length标头而存在内存耗尽漏洞,可能导致触发过度内存分配并导致服务器终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
OrthancDICOM Server 0 ~ 1.12.10 -
II. Public POCs for CVE-2026-5440
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III. Intelligence Information for CVE-2026-5440
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IV. Related Vulnerabilities
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