Discourse is a platform for community discussion. Under very specific circumstances, secure upload URLs associated with posts can be accessed by guest users even when login is required. This vulnerability has been patched in 3.2.0.beta4 and 3.1.4.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Discourse | Discourse | * | 3.1.4 (excluding) |
| Discourse | Discourse | 3.2.0-beta1 (including) | 3.2.0-beta1 (including) |
| Discourse | Discourse | 3.2.0-beta2 (including) | 3.2.0-beta2 (including) |
| Discourse | Discourse | 3.2.0-beta3 (including) | 3.2.0-beta3 (including) |
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: