After PHP 5.6 became the most widely used PHP version back in the spring of 2017, PHP maintainers realized it would be a disaster if they stopped security updates right when PHP 5.6 became the ...

In fact, PHP 5.6 is the most commonly used version of PHP on WordPress, accounting for 37 percent of sites using the platform.

The new versions of PHP are available now and the developers recommend that users upgrade as soon as possible. PHP versions 5.3.12 and 5.4.2 both contain the fix for the vulnerability.

The most recent version, 8.3, arrived late last year as the latest in a string of annual releases. Where developers have run up against limitations of PHP, they have successfully found workarounds.

PHP version 7.1 will reach EOL in December 2019. According to official WordPress statistics, 45.3% of WordPress publishers are running their sites on PHP versions 5.6 and 7.0.

The new version, PHP 8, promises to bring even more power and speed allowing for even better results. Unlike something like JavaScript, which is client-side, PHP is server-side.

Ubiquiti devices use 20-year-old PHP version The vulnerability is possible because of bad firmware coding, but also because Ubiquiti used an ancient PHP version to power the device's built-in server.

PHP versions prior to 5.3.12 and 5.4.2 are vulnerable. The Imperva blog post said that an estimated 16 percent of public websites are running a vulnerable version.