{"id":"OESA-2026-4458","summary":"thunderbird security update","details":"Mozilla Thunderbird is a standalone mail and newsgroup client.\r\n\r\nSecurity Fix(es):\n\nAn attacker could cause a heap buffer overflow by getting a user to open an email that is greater than or equal to 2GB in size. This vulnerability was fixed in Thunderbird 157, Thunderbird 140.17, and Thunderbird 153.4.(CVE-2026-103500)","modified":"2026-10-22T14:45:06.682964489Z","published":"2026-10-22T14:35:22Z","upstream":["CVE-2026-103500"],"database_specific":{"severity":"Critical"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4458"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103500"}],"affected":[{"package":{"name":"thunderbird","ecosystem":"openEuler:24.03-LTS-SP4","purl":"pkg:rpm/openEuler/thunderbird&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"140.17.0-1.oe2403sp4"}]}],"ecosystem_specific":{"aarch64":["thunderbird-140.17.0-1.oe2403sp4.aarch64.rpm","thunderbird-debuginfo-140.17.0-1.oe2403sp4.aarch64.rpm","thunderbird-debugsource-140.17.0-1.oe2403sp4.aarch64.rpm","thunderbird-librnp-rnp-140.17.0-1.oe2403sp4.aarch64.rpm","thunderbird-wayland-140.17.0-1.oe2403sp4.aarch64.rpm"],"src":["thunderbird-140.17.0-1.oe2403sp4.src.rpm"],"x86_64":["thunderbird-140.17.0-1.oe2403sp4.x86_64.rpm","thunderbird-debuginfo-140.17.0-1.oe2403sp4.x86_64.rpm","thunderbird-debugsource-140.17.0-1.oe2403sp4.x86_64.rpm","thunderbird-librnp-rnp-140.17.0-1.oe2403sp4.x86_64.rpm","thunderbird-wayland-140.17.0-1.oe2403sp4.x86_64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4458.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}