We just released Mastodon 4.5.5, 4.4.12, and 4.3.18.
These versions contain various bug fixes, including very important (1 high severity, 3 moderate severity) security fixes.
Mastodon 4.2 is now unsupported, so if you still run it, please update to a supported version as soon as you can.
Full release notes and update instructions are available on the GitHub releases page.
https://github.com/mastodon/mastodon/releases
#mastoadmin
Mastodon Engineering
npub1u8…2s78a
2026-01-20 15:45:03 UTC
Author Public Key
npub1u84dwmpv2zerws66094ehfyad0yj7vsh2vrt9k4xecyfutlcmzjq72s78aSeen on
wss://relay.momostr.pinkPublished at
2026-01-20 15:45:03 UTCEvent JSON
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"content": "We just released Mastodon 4.5.5, 4.4.12, and 4.3.18.\n\nThese versions contain various bug fixes, including very important (1 high severity, 3 moderate severity) security fixes.\n\nMastodon 4.2 is now unsupported, so if you still run it, please update to a supported version as soon as you can.\n\nFull release notes and update instructions are available on the GitHub releases page.\n\nhttps://github.com/mastodon/mastodon/releases\n\n#mastoadmin",
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