{"id":"RLSA-2026:90895","summary":"Important: thunderbird security, bug fix, and enhancement update","details":"Mozilla Thunderbird is a standalone mail and newsgroup client.\n\nSecurity Fix(es):\n\n* libexpat: denial of service via crafted XML input (CVE-2026-45186)\n\nBug Fix(es) and Enhancement(s):\n\n* Thunderbird ESR 153 rebase [rhel-10.2.z] (JIRA:Rocky Linux-175207)\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":"2026-10-29T12:30:03.187334005Z","published":"2026-10-29T12:08:23.381701Z","upstream":["CVE-2026-45186"],"database_specific":{"source_advisory":"RHSA-2026:90895","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:90895"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2468575"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:90895"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"Rocky Linux:10","purl":"pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-10&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:153.5.0-1.el10_2"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:90895.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}