Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: thunderbird (UTSA-2026-100877)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100877 advisory. When a file download is specified via the Content-Disposition header, that directive would be ignored if the file was included via a or tag, potentially making a...

firefox: thunderbird: Content-Disposition header ignored when a file is included in an embed or object tag

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: When a file download is specified via the Content-Disposition header, that directive would be ignored if the file was included via a or tag, potentially making a website vulnerab...