Public bug reported: thunderbird saves opened attachments to /tmp with permissions according to umask setting. This was fixed a long time ago with a protected folder /tmp/mozilla_${USER}0 and was still working correctly as of version 78.14.0+build1-0ubuntu0.20.04.2. The recent update to 1:91.5.0+build1-0ubuntu0.20.04.1 reintroduced the bug.
Ubuntu 20.04.3 LTS Kernel release: 5.13.0-25-generic Architecture: x86_64 ** Affects: thunderbird (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1959604 Title: Thunderbird 91.5.0 regression: writes attachments to /tmp readable to everyone To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1959604/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs