Information Disclosure vulnerability in creer_fichier_zip in admin/maintenance.php in BlogoText through 3.7.6 allows remote attackers to defeat a filename-randomization protection mechanism, and read backup archives on Windows servers, by providing the archiv~1.zip name (aka an 8.3 filename).
https://github.com/BlogoText/blogotext/issues/345
https://github.com/BlogoText/blogotext/commit/101dc1d37010a1d877d6961ed2f32d089c708e91