Lack of authorization controls in REST API functions in TeamPass through 2.1.27.36 allows any TeamPass user with a valid API token to become a TeamPass administrator and read/modify all passwords via authenticated api/index.php REST API calls. NOTE: the API is not available by default.
An issue was discovered in TeamPass 2.1.27.35. From the sources/items.queries.php "Import items" feature, it is possible to load a crafted CSV file with an XSS payload.