app/views/journals/index.builder in Redmine before 2.6.9, 3.0.x before 3.0.7, and 3.1.x before 3.1.3 allows remote attackers to obtain sensitive information by viewing an Atom feed.

The Issues API in Redmine before 2.6.8, 3.0.x before 3.0.6, and 3.1.x before 3.1.2 allows remote authenticated users to obtain sensitive information in changeset messages by leveraging permission to read issues with related changesets from other projects.

Open redirect vulnerability in the validbackurl function in app/controllers/applicationcontroller.rb in Redmine before 2.6.7, 3.0.x before 3.0.5, and 3.1.x before 3.1.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted backurl parameter, as demonstrated by "@attacker.com," a different vulnerability than CVE-2014-1985.

app/views/timelog/form.html.erb in Redmine before 2.6.8, 3.0.x before 3.0.6, and 3.1.x before 3.1.2 allows remote attackers to obtain sensitive information about subjects of issues by viewing the time logging form.