Mastodon 4.x — End of Life
ActiveMastodon 4.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status |
|---|---|---|---|---|---|
| 4.5 | Nov 6, 2025 | — | No | 4.5.11 | Active |
| 4.4 | Jul 8, 2025 | — | No | 4.4.18 | Active |
| 4.3 | Oct 8, 2024 | — | May 6, 2026 | 4.3.23 | EOL |
| 4.2 | Sep 21, 2023 | — | Jan 8, 2026 | 4.2.29 | EOL |
| 4.1 | Feb 10, 2023 | — | Apr 8, 2025 | 4.1.25 | EOL |
| 4.0 | Nov 14, 2022 | — | Oct 31, 2023 | 4.0.15 | EOL |
CVEs affecting Mastodon 4.x (0)
Frequently asked questions
Is Mastodon 4 end of life?
Partially. Some Mastodon 4.x releases have reached EOL. Check the version table above for the exact status of each sub-release.
What CVEs affect Mastodon 4?
No CVEs are currently tracked for Mastodon 4.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Mastodon 4 version?
The latest Mastodon 4.x patch release is 4.5.11, released on June 3, 2026. Always run the latest patch to benefit from all security fixes.
When was Mastodon 4 first released?
Mastodon 4.0 was initially released on November 6, 2025. See the full version timeline in the table above.
Is it safe to run Mastodon 4 in production?
Mastodon 4 is still supported and safe for production use. Ensure you are running the latest patch version (4.5.11) to have all security fixes applied.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA