Description
Mastodon is a self-hosted, federated microblogging platform. Starting in version 4.2.0 and prior to versions 4.2.16 and 4.3.4, the rate limits are missing on `/auth/setup`. Without those rate limits, an attacker can craft requests that will send an email to an arbitrary addresses. Versions 4.2.16 and 4.3.4 fix the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mastodon | mastodon | >= 4.2.0, < 4.2.16, >= 4.3.0, < 4.3.4 | — |