# Security Policy If you believe you've identified a security vulnerability in Mastodon (a bug that allows something to happen that shouldn't be possible), you should submit the report through our [Bug Bounty Program][bug-bounty]. Alternatively, you can reach us at <hello@joinmastodon.org>. You should *not* report such issues on GitHub or in other public spaces to give us time to publish a fix for the issue without exposing Mastodon's users to increased risk. ## Scope A "vulnerability in Mastodon" is a vulnerability in the code distributed through our main source code repository on GitHub. Vulnerabilities that are specific to a given installation (e.g. misconfiguration) should be reported to the owner of that installation and not us. ## Supported Versions | Version | Supported | | ------- | ------------------ | | 3.5.x | Yes | | 3.4.x | Yes | | 3.3.x | No | | < 3.3 | No | [bug-bounty]: https://app.intigriti.com/programs/mastodon/mastodonio/detail