{"answers":{"affected":"It affects 8 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-46143 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2021-46143 is a high-severity vulnerability in Libexpat Project Libexpat, published on 6 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-46143 and fix it if it is affected.\n\nWhat it is: CVE-2021-46143 is a high-severity vulnerability in Libexpat Project Libexpat, published on 6 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-46143 exists.\n\nAffected product: Libexpat Project Libexpat. 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-2021-46143/ (Markdown: https://insights.sbomify.com/CVE-2021-46143/index.md)","id":"CVE-2021-46143","markdown":"https://insights.sbomify.com/CVE-2021-46143/index.md","name":"CVE-2021-46143","record":{"aliases":["ALPINE-CVE-2021-46143","AZL-7155","CLEANSTART-2026-LJ99909","DEBIAN-CVE-2021-46143","GHSA-j6g2-cvhq-p8xr","JLSEC-2025-43","UBUNTU-CVE-2021-46143"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"XML parsing library","requires_auth":"none","summary":"An integer overflow in libexpat's XML parser can cause a denial of service, affecting applications that process untrusted XML.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"libexpat","vendor":"libexpat_project"},{"product":"active_iq_unified_manager","vendor":"netapp"},{"product":"clustered_data_ontap","vendor":"netapp"},{"product":"hci_baseboard_management_controller","vendor":"netapp"},{"product":"oncommand_workflow_automation","vendor":"netapp"},{"product":"solidfire_\\\u0026_hci_management_node","vendor":"netapp"},{"product":"sinema_remote_connect_server","vendor":"siemens"},{"product":"nessus","vendor":"tenable"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N","version":"3.1"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2022-04-11","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2022-04-11T12:29:22Z","kind":"github_poc","ref":"https://github.com/nanopathi/external_expat_AOSP10_r33_CVE-2021-46143","stars":0,"title":null}],"tier":"weaponised"},"has_fix":true,"headline":"Integer overflow in n/a","id":"CVE-2021-46143","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"libexpat_project:libexpat","products":["libexpat_project:libexpat","netapp:active_iq_unified_manager","netapp:clustered_data_ontap","netapp:oncommand_workflow_automation","netapp:solidfire_\\\u0026_hci_management_node","siemens:sinema_remote_connect_server","tenable:nessus"],"type":"integer_overflow","year":"2021"},"n_packages":0,"n_references":8,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-46144"},"packages":[],"prev":{"headline":"Use after free in n/a","id":"CVE-2021-46142"},"products":["n/a"],"published":"2022-01-06","related":[{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2024-45490","kev_date_added":null,"published":"2024-08-30"},{"cvss_score":8.7,"headline":"Expat Denial of Service via storeAtts() Quadratic Complexity","id":"CVE-2026-66046","kev_date_added":null,"published":"2026-08-18"},{"cvss_score":7.8,"headline":"Privilege escalation in n/a","id":"CVE-2017-11742","kev_date_added":null,"published":"2017-07-30"},{"cvss_score":7.5,"headline":"Denial of service in libexpat","id":"CVE-2025-59375","kev_date_added":null,"published":"2025-09-15"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-52425","kev_date_added":null,"published":"2024-02-04"},{"cvss_score":7.3,"headline":"Integer overflow in n/a","id":"CVE-2024-45491","kev_date_added":null,"published":"2024-08-30"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["n/a"]},"summary":"An integer overflow in libexpat's XML parser can cause a denial of service, affecting applications that process untrusted XML.","url":"https://insights.sbomify.com/CVE-2021-46143/"}