{"id":"ALSA-2026:71586","summary":"Important: libxml2 security update","details":"The libxml2 library is a development toolbox providing the implementation of various XML standards.  \n\nSecurity Fix(es):  \n\n  * libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow (CVE-2026-86138)\n  * libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks (CVE-2026-86143)\n  * libxml2: libxml2: Arbitrary code execution via stack-based buffer overflow in xmlSnprintfElements (CVE-2026-86140)\n  * libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation (CVE-2026-86142)\n  * libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. (CVE-2026-86144)\n  * libxml2: double-free/UAF in libxml2 Python bindings (CVE-2026-74860)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","modified":"2026-09-25T15:11:45.875853908Z","published":"2026-09-24T00:00:00Z","related":["CVE-2026-74860","CVE-2026-86138","CVE-2026-86140","CVE-2026-86142","CVE-2026-86143","CVE-2026-86144"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:71586"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-74860"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-86138"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-86140"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-86142"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-86143"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-86144"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2528986"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2528987"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2528989"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2528990"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2528992"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2529697"},{"type":"ADVISORY","url":"https://errata.almalinux.org/10/ALSA-2026-71586.html"}],"affected":[{"package":{"name":"libxml2","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libxml2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-10.el10_2.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:71586.json"}},{"package":{"name":"libxml2-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libxml2-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-10.el10_2.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:71586.json"}},{"package":{"name":"libxml2-static","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libxml2-static"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-10.el10_2.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:71586.json"}},{"package":{"name":"python3-libxml2","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/python3-libxml2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-10.el10_2.4"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:71586.json"}}],"schema_version":"1.9.0"}