mastodon/SECURITY.md
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Add 4.5.x to the list of supported branches (#36762)
2025-11-06 16:23:56 +00:00

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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 can either:

You should not report such issues on public GitHub issues 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
4.5.x Yes
4.4.x Yes
4.3.x Until 2026-05-06
4.2.x Until 2026-01-08
< 4.2 No