WebLogic Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2021-29425
In Apache Commons IO before 2.7 When invoking the method FileNameUtils.normalize with an improper input string like quot//../fooquot or quot..fooquot the result would be the same value thus possibly providing access to files in the parent directory but not further above (thus quotlimitedquot path traversal) if the calling code would use the result to construct a path value.