Please use the latest release you can find in the CHANGELOG.md.
Reporting a Vulnerability
Please disclose any vulnerabilities found responsibly - report any security problems found to the maintainers privately.
For example you can write me a email: firstname.lastname@example.org
Portable UTF-8 versions prior to 5.4.26 (released 2019-11-05) have an open redirect vulnerability. The
Bootup::filterRequestUri() method used a unsecure
header('Location ... implentation. And because it's most secure to not use this method at all, I decided to disable the function by default.