{"answers":{"affected":"2 open source packages ship an affected version, including nokogiri. It affects 28 products.","exploited":"There is no known exploitation of CVE-2021-3517 in the wild and no public exploit code.","fix":"Upgrade nokogiri to 1.11.4 or later.","what":"CVE-2021-3517 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 19 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-3517 and fix it if it is affected.\n\nWhat it is: CVE-2021-3517 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 19 May 2021. 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-2021-3517 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nokogiri (RubyGems): affected all versions; fixed in 1.11.4\n- nokogiri (RubyGems): affected all versions; fixed in 1.11.4\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-2021-3517/ (Markdown: https://insights.sbomify.com/CVE-2021-3517/index.md)","id":"CVE-2021-3517","markdown":"https://insights.sbomify.com/CVE-2021-3517/index.md","name":"CVE-2021-3517","record":{"aliases":["ALPINE-CVE-2021-3517","DEBIAN-CVE-2021-3517","ECHO-9b11-dcb0-2dc6","GHSA-jw9f-hh49-cvp9","JLSEC-2025-72","UBUNTU-CVE-2021-3517"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"XML parsing library","requires_auth":"none","summary":"An attacker can trigger an out-of-bounds read in libxml2 via a crafted file, causing application crashes and potential information disclosure.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"active_iq_unified_manager","vendor":"netapp"},{"product":"clustered_data_ontap","vendor":"netapp"},{"product":"clustered_data_ontap_antivirus_connector","vendor":"netapp"},{"product":"e-series_santricity_os_controller","vendor":"netapp"},{"product":"e-series_santricity_storage_manager","vendor":"netapp"},{"product":"e-series_santricity_web_services","vendor":"netapp"},{"product":"hci_h410c_firmware","vendor":"netapp"},{"product":"hci_management_node","vendor":"netapp"},{"product":"manageability_software_development_kit","vendor":"netapp"},{"product":"oncommand_insight","vendor":"netapp"},{"product":"oncommand_workflow_automation","vendor":"netapp"},{"product":"ontap_select_deploy_administration_utility","vendor":"netapp"},{"product":"santricity_unified_manager","vendor":"netapp"},{"product":"snapdrive","vendor":"netapp"},{"product":"snapmanager","vendor":"netapp"},{"product":"solidfire","vendor":"netapp"},{"product":"communications_cloud_native_core_network_function_cloud_native_environment","vendor":"oracle"},{"product":"enterprise_manager_base_platform","vendor":"oracle"},{"product":"mysql_workbench","vendor":"oracle"},{"product":"openjdk","vendor":"oracle"},{"product":"peoplesoft_enterprise_peopletools","vendor":"oracle"},{"product":"real_user_experience_insight","vendor":"oracle"},{"product":"zfs_storage_appliance_kit","vendor":"oracle"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"jboss_core_services","vendor":"redhat"},{"product":"libxml2","vendor":"xmlsoft"}],"cvss":{"score":8.6,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"},{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.","ecosystems":["RubyGems"],"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":"Nokogiri contains libxml Out-of-bounds Write vulnerability","id":"CVE-2021-3517","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","netapp:active_iq_unified_manager","netapp:clustered_data_ontap","netapp:e-series_santricity_os_controller","netapp:e-series_santricity_storage_manager","netapp:e-series_santricity_web_services","netapp:hci_management_node","netapp:oncommand_insight","netapp:oncommand_workflow_automation","netapp:ontap_select_deploy_administration_utility","netapp:santricity_unified_manager","netapp:snapmanager","netapp:solidfire","oracle:enterprise_manager_base_platform","oracle:openjdk","oracle:peoplesoft_enterprise_peopletools","oracle:zfs_storage_appliance_kit","redhat:enterprise_linux","xmlsoft:libxml2"],"type":"memory_corruption","year":"2021"},"n_packages":2,"n_references":13,"next":{"headline":"Nokogiri Implements libxml2 version vulnerable to use-after-free","id":"CVE-2021-3518"},"packages":[{"ecosystem":"RubyGems","fixed":["1.11.4"],"introduced":["0"],"last_affected":[],"package":"nokogiri","purl":null,"source":"GHSA-jw9f-hh49-cvp9"},{"ecosystem":"RubyGems","fixed":["1.11.4"],"introduced":["0"],"last_affected":[],"package":"nokogiri","purl":"pkg:gem/nokogiri","source":"GHSA-jw9f-hh49-cvp9"}],"prev":{"headline":"Use after free in libxml2","id":"CVE-2021-3516"},"products":["libxml2"],"published":"2021-05-19","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-10-14","vendors":["n/a"]},"summary":"An attacker can trigger an out-of-bounds read in libxml2 via a crafted file, causing application crashes and potential information disclosure.","url":"https://insights.sbomify.com/CVE-2021-3517/"}