CVE-2019-16318
In Pimcore before 5.7.1, an attacker with limited privileges can bypass file-extension restrictions via a 256-character filename, as demonstrated by the failure of automatic renaming of .php to .php.txt for long filenames, a different vulnerability than CVE-2019-10867 and CVE-2019-16317.
Date published : 2019-09-14
https://github.com/pimcore/pimcore/commit/732f1647cc6e0a29b5b1f5d904b4d726b5e9455f