{"id":"RLSA-2026:98468","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: mingw-libxml2: libxml2: Denial of Service via crafted XML input due to use-after-free (CVE-2026-6653)\n\n* libxml2: libxml2: Arbitrary code execution in xmlcatalog utility via buffer overflow (CVE-2026-11979)\n\n* libxml2: libxml2: Arbitrary code execution via heap-based buffer overflow (CVE-2026-86138)\n\n* libxml2: libxml2: Data integrity issues due to integer overflow in write callbacks (CVE-2026-86143)\n\n* libxml2: libxml2: Arbitrary code execution via stack-based buffer overflow in xmlSnprintfElements (CVE-2026-86140)\n\n* libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation (CVE-2026-86142)\n\n* libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. (CVE-2026-86144)\n\n* libxml2: double-free/UAF in libxml2 Python bindings (CVE-2026-74860)\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.","modified":"2026-11-13T12:45:03.790500347Z","published":"2026-11-13T12:04:43.442503Z","upstream":["CVE-2026-11979","CVE-2026-6653","CVE-2026-74860","CVE-2026-86138","CVE-2026-86140","CVE-2026-86142","CVE-2026-86143","CVE-2026-86144"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:98468","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:98468"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491354"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2494191"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528986"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528987"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528989"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528990"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528992"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529697"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:98468"}],"affected":[{"package":{"name":"libxml2","ecosystem":"Rocky 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