Description
Mastodon is a self-hosted, federated microblogging platform. Starting in version 2.6.0 and prior to versions 4.1.18 and 4.2.10, by crafting specific activities, an attacker can extend the audience of a post they do not own to other Mastodon users on a target server, thus gaining access to the contents of a post not intended for them. Versions 4.1.18 and 4.2.10 contain a patch for this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mastodon | mastodon | >= 2.6.0, < 4.1.18, >= 4.2.0, < 4.2.10 | — |
References
- https://github.com/mastodon/mastodon/security/advisories/GHSA-xjvf-fm67-4qc3
- https://github.com/mastodon/mastodon/commit/a1c7aae28aecf06659c5b18cfa131b37cd1512a3
- https://github.com/mastodon/mastodon/commit/d4bf22b632ea8b1174375c4966a6768ab66393b6
- https://github.com/mastodon/mastodon/releases/tag/v4.1.18
- https://github.com/mastodon/mastodon/releases/tag/v4.2.10