Is Mastodon 4.3.23 patched?
Current stable (4.5.11): 100/100
Summary iPlain-English security status for Mastodon 4.3.23, built from its CVEs, active-exploitation data, end-of-life date and latest release.
Mastodon 4.3.23 is part of the 4.3 release line. No known vulnerabilities affect it in our data. The 4.3 line reached end-of-life on 2026-05-06, so it no longer receives security patches. The latest supported Mastodon release is 4.5.11.
Known issues affecting 4.3.23
None found for this version. ✓
Other Mastodon versions
Check another release line of Mastodon.
Frequently asked
Is Mastodon 4.3.23 patched?
Mastodon 4.3.23 is end-of-life and no longer receives security patches. Move to 4.5.11.
When does Mastodon 4.3 reach end-of-life?
Mastodon 4.3 reached end-of-life on 2026-05-06 and no longer receives security patches.
What is the latest version of Mastodon?
The latest supported Mastodon release is 4.5.11.
Is Mastodon 4.3.23 still receiving security updates?
No — Mastodon 4.3.23 is on the 4.3 line, which reached end-of-life on 2026-05-06 and no longer receives security updates. Upgrade to 4.5.11 or later to stay supported.
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Mastodon's official advisory before you patch or upgrade — Mastodon official site ↗