The `/{username}` web route accepted personal access tokens via HTTP Basic authentication without verifying their scope. This allowed tokens with unrelated scopes, such as `read:issue`, to access the owner's private activity through the profile activity tab and RSS/Atom feeds, as well as private organization activity via the organization feed. Additionally, public-only tokens could list private repositories, organizations, and render private profile READMEs. In the case of site administrator tokens, this access extended to every account.