CVE-2026-5440— Memory Exhaustion via Unbounded Content-Length
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-5440
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Orthanc | DICOM Server | 0 ~ 1.12.10 | - |
II. Public POCs for CVE-2026-5440
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-5440
请登录查看更多情报信息。
Same Patch Batch · Orthanc · 2026-04-09 · 9 CVEs total
| CVE-2026-5444 | Heap Buffer Overflow in PAM Image Buffer Allocation | |
| CVE-2026-5442 | Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions | |
| CVE-2026-5441 | Out-of-Bounds Read in DicomImageDecoder (PMSCT_RLE1 Decompression) | |
| CVE-2026-5445 | Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable) | |
| CVE-2026-5443 | Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode) | |
| CVE-2026-5438 | Gzip Decompression Bomb via Content-Encoding Header | |
| CVE-2026-5439 | Memory Exhaustion via Forged ZIP Metadata | |
| CVE-2026-5437 | Out-of-Bounds Read in DicomStreamReader |
IV. Related Vulnerabilities
Same product: DICOM Server
- CVE-2026-5439
Memory Exhaustion via Forged ZIP Metadata - CVE-2026-5437
Out-of-Bounds Read in DicomStreamReader - CVE-2026-5438
Gzip Decompression Bomb via Content-Encoding Header - CVE-2026-5442
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimens - CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color D
Same vendor: Orthanc
- CVE-2026-5439
Memory Exhaustion via Forged ZIP Metadata - CVE-2026-5437
Out-of-Bounds Read in DicomStreamReader - CVE-2026-5438
Gzip Decompression Bomb via Content-Encoding Header - CVE-2026-5442
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimens - CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color D
V. Comments for CVE-2026-5440
No comments yet