The default configuration of cfg.packagepages_actions_excluded in MoinMoin before 1.8.7 does not prevent unsafe package actions, which has unspecified impact and attack vectors.
MoinMoin before 1.8.7 and 1.9.x before 1.9.2 does not properly sanitize user profiles, which has unspecified impact and attack vectors.
The cache action in action/cache.py in MoinMoin through 1.9.10 allows directory traversal through a crafted HTTP request. An attacker who can upload attachments to the wiki can use this to achieve remote code execution.