Thunderbird 52.6.0 is a security update for the popular desktop email client. The release is available via the email client's automatic update feature and also on the official project website.
Thunderbird users can run a manual check for updates with a click on Help > About Thunderbird. If the menu bar is missing, tap on the Alt-key to display it.
Thunderbird will pick up the new update and download and install it automatically.
Thunderbird 52.6.0 is a security and maintenance release.
The team lists all fixed security vulnerabilities on this page. The bulk of issues cannot be exploited through emails because scripts are disabled by default when reading emails. They may be exploited however in browser or browser-like contexts.
Thunderbird 52.6.0 fixes three usability issues as well.
The search issue fix is probably the biggest improvement in the release. Thunderbird's built-in search did not work reliably in some cases. If you noticed in the past that mails were not returned by the search even though they should, this may have been the reason for that.
Thunderbird did not display defective messages in IMAP folders under certain circumstances. This is fixed as well and should work as intended.
Last but not least, a bug caused tasks to be deleted in the built-in calendar if Numlock was activated.
Thunderbird 52.6.0 is a security update and as such should be installed asap. I did not notice any issues yet after the upgrade but that is just with a couple of minutes of using the new version. If anything comes up I'll update the article.
Now You: Which email client or service do you use?
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