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mastodon
Communication & Email
A free, open‑source social network server that forms part of the federated Fediverse using ActivityPub
Ruby
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Latest v4.4.18 · 12h ago
Security brief →
Features
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Part of the Fediverse – interoperable with any ActivityPub implementation
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Real‑time chronological timeline updates
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Support for media attachments (images, videos, animated GIFs)
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Comprehensive safety and moderation tools (filtering, muting, blocking, reporting)
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v4.4.18
Security relevant
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Auth
RCE / SSRF
Security fixes + media description handling
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v4.5.11
Security relevant
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Auth
RCE / SSRF
Security fixes + media description bug
Upgrade now
v4.5.10
Breaking risk
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RCE / SSRF
Breaking upgrade
SSRF fix + strategy removal
v4.3.22
Security relevant
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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
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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
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Ruby
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TypeScript
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