Symfony version(s) affected

5.4.0, 6.0.0

Description

If an absolute path has more than one forward slashes exactly next to the Windows drive, the path is detected as not being absolute. Backward slashes are not problematic at all, and also forward slashes, except the current case.

For instance, calling Path::isAbsolute() on 'C://users/' will return false, but for both 'C:/users//' and 'C:\\\\users/', true is returned.

How to reproduce

Run the following PHP codes:

Path::isAbsolute('E://test');

Path::isAbsolute('C:///windows');

Path::isAbsolute(
    Path::join('C:', '\\users')
);

Possible Solution

No response

Additional Context

No response