{"id":"CVE-2019-19956","title":"xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.","summary":"xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-401","CWE-772"],"vendor":"xmlsoft","product":"libxml2","affected":["libxml2 < 2.9.10","debian_linux = 8.0","debian_linux = 9.0","real_user_experience_insight = 13.3.1.0","fedora = 30","fedora = 32","ubuntu_linux = 12.04","ubuntu_linux = 14.04","ubuntu_linux = 16.04","ubuntu_linux = 18.04","ubuntu_linux = 19.10","active_iq_unified_manager","clustered_data_ontap","clustered_data_ontap_antivirus_connector","manageability_software_development_kit","ontap_select_deploy_administration_utility","steelstore_cloud_integrated_storage","sinema_remote_connect_server < 3.0"],"patched":["libxml2 2.9.10","sinema_remote_connect_server 3.0"],"published":"2019-12-24","updated":"2026-10-14","sourceUpdated":"2026-10-14T08:17:00.290","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-19956","references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html","label":"cve@mitre.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf","label":"cve@mitre.org"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20200114-0002/","label":"cve@mitre.org"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08","label":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4274-1/","label":"cve@mitre.org"},{"url":"https://www.oracle.com/security-alerts/cpujul2020.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20200114-0002/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4274-1/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpujul2020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-292794.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.0556,"epssPercentile":0.9269,"ingestedAt":"2026-10-14T08:23:04.328Z","slug":"CVE-2019-19956","body":"## Overview\n\nxmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.\n\n## Affected\n\n- `libxml2 < 2.9.10`\n- `debian_linux = 8.0`\n- `debian_linux = 9.0`\n- `real_user_experience_insight = 13.3.1.0`\n- `fedora = 30`\n- `fedora = 32`\n- `ubuntu_linux = 12.04`\n- `ubuntu_linux = 14.04`\n- `ubuntu_linux = 16.04`\n- `ubuntu_linux = 18.04`\n- `ubuntu_linux = 19.10`\n- `active_iq_unified_manager`\n- `clustered_data_ontap`\n- `clustered_data_ontap_antivirus_connector`\n- `manageability_software_development_kit`\n- `ontap_select_deploy_administration_utility`\n- `steelstore_cloud_integrated_storage`\n- `sinema_remote_connect_server < 3.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `libxml2 2.9.10`\n- `sinema_remote_connect_server 3.0`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":1.1,"exploitation":0,"ransomware":0},"changes":[]}