Incorrect Permission Assignment for Critical Resource
In Gitea prior to 1.16.9, it was possible for users to add existing issues to projects. Due to improper access controls, an attacker could assign any issue to any project in Gitea (there was no permission check for fetching the issue). As a result, the attacker would get access to private issue titles.
CWE-732 - Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.