CVE-2019-19956

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

5.6% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)

CWEs

CWE-401, CWE-772

Published

2019-12-24

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• canonical:ubuntu_linux
• debian:debian_linux
• fedoraproject:fedora
• netapp:active_iq_unified_manager
• netapp:clustered_data_ontap
• netapp:clustered_data_ontap_antivirus_connector
• netapp:manageability_software_development_kit
• netapp:ontap_select_deploy_administration_utility
• netapp:steelstore_cloud_integrated_storage
• oracle:real_user_experience_insight
• siemens:sinema_remote_connect_server
• xmlsoft:libxml2

References

• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf
• https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549
• https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html

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