Description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user's files. This issue is fixed in version 2.63.17.
Problem types
CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions
CWE-706: Use of Incorrectly-Resolved Name or Reference
Product status
References
github.com/...rowser/security/advisories/GHSA-7rc3-g7h6-22m7
github.com/...ommit/883a36f02fcb69566a8628cb47f18fdc73348387
github.com/filebrowser/filebrowser/releases/tag/v2.63.17