CWE-42: Path Equivalence: 'filename.' (Trailing Dot)
The product accepts path input in the form of trailing dot ('filedir.') without appropriate validation, which can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.
A kind of CWE-41 Improper Resolution of Path Equivalence.
From the CWE List. © The MITRE Corporation.