MediaWiki 1.43 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
MediaWiki 1.43 is actively supported. It reaches end of life on 31 Dec 2027.
509 days of security support left
1.43.9 latest release
54% of this branch's supported lifetime has elapsed — 21 Dec 2024 → 31 Dec 2027.
Check your versionhttps://your-server-url/mediawiki/Special:Version
Support timeline
Official dates from the MediaWiki release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 21 Dec 2024 | — |
| End of life (scheduled) | 31 Dec 2027 | in 509 days |
| Latest release | 1.43.9 · 29 Jun 2026 | current |
How much runway a newer branch buys
Moving to MediaWiki 1.46 extends security support by about -153 days.
| Branch | End of life | Days left | vs 1.43 |
|---|---|---|---|
| MediaWiki 1.46 | 31 Jul 2027 | 356 | -153 days |
| MediaWiki 1.45 | 31 Dec 2026 | 144 | -365 days |
| MediaWiki 1.43 | 31 Dec 2027 | 509 | this branch |
Frequently asked questions
When does MediaWiki 1.43 reach end of life?
MediaWiki 1.43 reaches end of life on 31 Dec 2027 — 509 days from now. After that date it receives no security fixes.
Is MediaWiki 1.43 still supported?
Yes. MediaWiki 1.43 is currently maintained. Latest release: 1.43.9, published 29 Jun 2026.
What happens when MediaWiki 1.43 reaches end of life?
Security fixes stop. After 31 Dec 2027 this branch receives no further updates under standard support.
How long do I have to upgrade from MediaWiki 1.43?
509 days. Moving to MediaWiki 1.46 instead buys roughly -153 more days of security support.