家族のサイトで利用しているCMSツール「Joomla!」をバージョン3.8.8にアップデートしました。

～　リリースノート　～
Joomla 3.8.8 Release

What’s in 3.8.8?

Joomla 3.8.8 addresses 9 security vulnerabilities / hardenings and several bugs, including:
Security Issues Fixed

Low Priority – Core – ACL violation in access levels (affecting Joomla 2.5.0 through 3.8.7) More information »
Low Priority – Core – Add phar files to the upload blacklist (affecting Joomla 2.5.0 through 3.8.7) More information »
Moderate Priority – Core – Information Disclosure about unpublished tags (affecting Joomla 3.1.0 through 3.8.7) More information »
Low Priority – Core – Installer leaks plain text password to local user (affecting Joomla 3.0.0 through 3.8.7) More information »
Moderate Priority – Core – XSS Vulnerabilities & additional hardening (affecting Joomla 3.0.0 through 3.8.7) More information »
Low Priority – Core – Filter field in com_fields allows remote code execution (affecting Joomla 3.7.0 through 3.8.7) More information »
Low Priority – Core – Session deletion race condition (affecting Joomla 3.0.0 through 3.8.7) More information »
Low Priority – Core – Possible XSS attack in the redirect method (affecting Joomla 3.2.1 through 3.8.7) More information »
Low Priority – Core – XSS vulnerability in the media manager (affecting Joomla 1.5.0 through 3.8.7) More information »

Please see the documentation wiki for the security recommendations for updated sites.
More details about the session deletion race condition are available on the Developer Network site.
Bug fixes and Improvements

Miscellaneous accessibility improvements for the Backend
Updated CodeMirror to 5.37 and various improvements #20269 #19833 #12542
Improved handling of numeric user group names #20091
[com_content] Filter by no author #20245
Added support for PHP 7.3’s is_countable function #20441
Sending passwords by email disabled by default for new installs #20247

Visit GitHub for the full list of bug fixes.

　
　　
セキュリティ問題の対処とバグの修正が行われていますので、Joomla!ご利用者は早めのアップデートがお勧めです。
しーゆー。