Ansel contains a flaw that may allow a malicious user to access arbitrary files. The issue is triggered when a photo album is created. Ansel creates the ablums with insecure permissions. It is possible that the flaw may allow access to web readable directories resulting in a loss of confidentiality.
Upgrade to version 2.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.