{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-5439 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-5439 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-2026-5439 and fix it if it is affected.\n\nWhat it is: CVE-2026-5439 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-2026-5439 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-2026-5439/ (Markdown: https://insights.sbomify.com/CVE-2026-5439/index.md)","id":"CVE-2026-5439","markdown":"https://insights.sbomify.com/CVE-2026-5439/index.md","name":"CVE-2026-5439","record":{"aliases":["DEBIAN-CVE-2026-5439","GHSA-6cmv-pvcc-pf5h","UBUNTU-CVE-2026-5439"],"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 cause server memory exhaustion and denial of service by uploading crafted ZIP archives with forged size metadata to Orthanc DICOM server.","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 ZIP archive processing. Orthanc automatically extracts ZIP archives uploaded to certain endpoints and trusts metadata fields describing the uncompressed size of archived files. An attacker can craft a small ZIP archive containing a forged size value, causing the server to allocate extremely large buffers during extraction.","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 Forged ZIP Metadata","id":"CVE-2026-5439","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":"Memory Exhaustion via Unbounded Content-Length","id":"CVE-2026-5440"},"packages":[],"prev":{"headline":"Gzip Decompression Bomb via Content-Encoding Header","id":"CVE-2026-5438"},"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 cause server memory exhaustion and denial of service by uploading crafted ZIP archives with forged size metadata to Orthanc DICOM server.","url":"https://insights.sbomify.com/CVE-2026-5439/"}