{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-5440 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-5440 is a high-severity denial of service vulnerability in Orthanc DICOM Server, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5440 and fix it if it is affected.\n\nWhat it is: CVE-2026-5440 is a high-severity denial of service vulnerability in Orthanc DICOM Server, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-5440 in the wild and no public exploit code.\n\nAffected product: Orthanc DICOM Server. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-5440/ (Markdown: https://insights.sbomify.com/CVE-2026-5440/index.md)","id":"CVE-2026-5440","markdown":"https://insights.sbomify.com/CVE-2026-5440/index.md","name":"CVE-2026-5440","record":{"aliases":["DEBIAN-CVE-2026-5440","GHSA-826q-ppf7-8g9v","UBUNTU-CVE-2026-5440"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DICOM server","requires_auth":"none","summary":"Attackers can crash the Orthanc DICOM server by sending HTTP requests with excessively large Content-Length headers, causing memory exhaustion.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"certcc","cpe":[{"product":"orthanc","vendor":"orthanc-server"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Memory Exhaustion via Unbounded Content-Length","id":"CVE-2026-5440","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Out-of-Bounds Read in DicomImageDecoder (PMSCT_RLE1 Decompression)","id":"CVE-2026-5441"},"packages":[],"prev":{"headline":"Memory Exhaustion via Forged ZIP Metadata","id":"CVE-2026-5439"},"products":["DICOM Server"],"published":"2026-04-09","related":[{"cvss_score":9.8,"headline":"Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions","id":"CVE-2026-5442","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":9.8,"headline":"Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)","id":"CVE-2026-5443","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":9.2,"headline":"Orthanc Server Missing Authentication for Critical Function","id":"CVE-2025-0896","kev_date_added":null,"published":"2025-02-13"},{"cvss_score":9.1,"headline":"Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)","id":"CVE-2026-5445","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":8.8,"headline":"Path traversal in n/a","id":"CVE-2023-33466","kev_date_added":null,"published":"2023-06-29"},{"cvss_score":7.5,"headline":"Out-of-Bounds Read in DicomStreamReader","id":"CVE-2026-5437","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":7.5,"headline":"Gzip Decompression Bomb via Content-Encoding Header","id":"CVE-2026-5438","kev_date_added":null,"published":"2026-04-09"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-14","vendors":["Orthanc"]},"summary":"Attackers can crash the Orthanc DICOM server by sending HTTP requests with excessively large Content-Length headers, causing memory exhaustion.","url":"https://insights.sbomify.com/CVE-2026-5440/"}