Issues and Series for Newspapers, Magazines, Publishers, Writers < 3.1.4 - Authenticated (Contributor+) Insecure Direct Object Reference

Description

The Issues and Series for Newspapers, Magazines, Publishers, Writers plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.1.3. This is due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to perform an unauthorized action.