User without access to private Wiki can see it on the project page
Matthias Burtscher reported that it was possible for a user to see a
private Wiki on the project page without having the corresponding
permission.
E-mail address disclosure through member search fields
Hugo Geoffroy reported via HackerOne that it was possible to find out the
full e-mail address of any user by brute-forcing the member search
field.
Groups API leaks private projects
An internal code review discovered that users were able to list private
projects they had no access to by using the Groups API.
Cross-Site Scripting (XSS) possible by editing a comment
Sylvain Heiniger reported via HackerOne that it was possible for
arbitrary JavaScript code to be executed when editing a comment.
Issue API allows any user to create a new issue even when issues are
restricted or disabled
Mohammad Hasbini reported that any user could create a new issues in a
project even when issues were disabled or restricted to team members in the
project settings.