{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5440", "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b", "state": "PUBLISHED", "assignerShortName": "certcc", "dateReserved": "2026-04-02T19:22:26.410Z", "datePublished": "2026-04-09T14:43:55.684Z", "dateUpdated": "2026-04-09T14:43:55.684Z"}, "containers": {"cna": {"title": "Memory Exhaustion via Unbounded Content-Length", "descriptions": [{"lang": "en", "value": "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": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Orthanc", "product": "DICOM Server", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "1.12.10", "versionType": "custom"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-770 Allocation of Resources Without Limits or Throttling"}]}], "references": [{"url": "https://www.orthanc-server.com/"}, {"url": "https://www.machinespirits.de/"}, {"url": "https://kb.cert.org/vuls/id/536588"}], "x_generator": {"engine": "VINCE 3.0.35", "env": "prod", "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-5440"}, "providerMetadata": {"orgId": "37e5125f-f79b-445b-8fad-9564f167944b", "shortName": "certcc", "dateUpdated": "2026-04-09T14:43:55.684Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-5440", "lastModified": "2026-04-09T15:16:16.337", "metrics": {}, "published": "2026-04-09T15:16:16.337", "references": [{"source": "cret@cert.org", "url": "https://kb.cert.org/vuls/id/536588"}, {"source": "cret@cert.org", "url": "https://www.machinespirits.de/"}, {"source": "cret@cert.org", "url": "https://www.orthanc-server.com/"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Received"}

{}