{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-4739 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-4739 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-4739 is a critical vulnerability in InsightSoftwareConsortium ITK, published on 24 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-4739 and fix it if it is affected.\n\nWhat it is: CVE-2026-4739 is a critical vulnerability in InsightSoftwareConsortium ITK, published on 24 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-4739 in the wild and no public exploit code.\n\nAffected product: InsightSoftwareConsortium ITK. 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-2026-4739/ (Markdown: https://insights.sbomify.com/CVE-2026-4739/index.md)","id":"CVE-2026-4739","markdown":"https://insights.sbomify.com/CVE-2026-4739/index.md","name":"CVE-2026-4739","record":{"aliases":["DEBIAN-CVE-2026-4739","GHSA-9vxh-wwmc-c2m7","UBUNTU-CVE-2026-4739"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ITK library","requires_auth":"none","summary":"An integer overflow in the bundled Expat module of the ITK library allows attackers to potentially execute code or cause denial of service.","user_interaction":"required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GovTech CSG","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber","version":"4.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Integer overflow vulnerabilities in InsightSoftwareConsortium/ITK","id":"CVE-2026-4739","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Open Cluster Management (OCM): Cross-cluster privilege escalation via improper Kubernetes client certificate renewal validation","id":"CVE-2026-4740"},"packages":[],"prev":{"headline":"Memory corruption in gdal","id":"CVE-2026-4738"},"products":["ITK"],"published":"2026-03-24","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-24","vendors":["InsightSoftwareConsortium"]},"summary":"An integer overflow in the bundled Expat module of the ITK library allows attackers to potentially execute code or cause denial of service.","url":"https://insights.sbomify.com/CVE-2026-4739/"}