Symfony up to 4.0-BETA4 Intl read() directory traversal

A vulnerability classified as problematic has been found in Symfony up to 4.0-BETA4. Affected is the function read() of the component Intl. Upgrading to version 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5 or 4.0-BETA5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.