danny-avila/librechat is affected by an authorization bypass vulnerability due to improper access control checks. The checkAccess function in api/server/middleware/roles/access.js uses permissions.some() to validate permissions, which incorrectly grants access if only one of multiple required permissions is present. This allows users with the USER role to create agents despite having CREATE: false permission, as the check for [USE, CREATE] passes with just USE: true. This vulnerability affects other permission checks as well, such as PROMPTS. The issue is present in all versions prior to the fix.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: