Skip to content

mastodon

Communication & Email

A free, open‑source social network server that forms part of the federated Fediverse using ActivityPub

Ruby Latest v4.4.18 · 16h ago Security brief →

Features

  • Part of the Fediverse – interoperable with any ActivityPub implementation
  • Real‑time chronological timeline updates
  • Support for media attachments (images, videos, animated GIFs)
  • Comprehensive safety and moderation tools (filtering, muting, blocking, reporting)

Recent releases

View all 22 releases →
Upgrade now
v4.4.18 Security relevant
Auth RCE / SSRF

Security fixes + media description handling

Upgrade now
v4.5.11 Security relevant
Auth RCE / SSRF

Security fixes + media description bug

Upgrade now
v4.5.10 Breaking risk
RCE / SSRF Breaking upgrade

SSRF fix + strategy removal

v4.3.22 Security relevant
Security fixes
  • Insufficient verification of email addresses (GHSA-5r37-qpwq-2jhh)
Notable features
  • Add trademark warning to mastodon:setup task
v4.4.16 Security relevant
Security fixes
  • Insufficient verification of email addresses (GHSA-5r37-qpwq-2jhh)
Notable features
  • Add trademark warning to mastodon:setup task
  • Fix quote definition in JSON-LD context

Weekly OSS security release digest.

The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

No spam, unsubscribe anytime.

About

Stars
49,982
Forks
7,450
Languages
Ruby TypeScript JavaScript

Install & Platforms

Install via
docker docker-compose helm

Community & Support

Open source alternatives

Beta — feedback welcome: [email protected]