Mozilla Thunderbird is a standalone mail and newsgroup client.
Security Fix(es):
An 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)
{
"severity": "Critical"
}{
"aarch64": [
"thunderbird-140.17.0-1.oe2403sp3.aarch64.rpm",
"thunderbird-debuginfo-140.17.0-1.oe2403sp3.aarch64.rpm",
"thunderbird-debugsource-140.17.0-1.oe2403sp3.aarch64.rpm",
"thunderbird-librnp-rnp-140.17.0-1.oe2403sp3.aarch64.rpm",
"thunderbird-wayland-140.17.0-1.oe2403sp3.aarch64.rpm"
],
"src": [
"thunderbird-140.17.0-1.oe2403sp3.src.rpm"
],
"x86_64": [
"thunderbird-140.17.0-1.oe2403sp3.x86_64.rpm",
"thunderbird-debuginfo-140.17.0-1.oe2403sp3.x86_64.rpm",
"thunderbird-debugsource-140.17.0-1.oe2403sp3.x86_64.rpm",
"thunderbird-librnp-rnp-140.17.0-1.oe2403sp3.x86_64.rpm",
"thunderbird-wayland-140.17.0-1.oe2403sp3.x86_64.rpm"
]
}