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End of Life: Joomla 1.0

updated 20 October 2026

Joomla 1.0 reached its end of life on 22 July 2009: since then there have been no security updates and no bug fixes for it – for more than 17 years. The last version was Joomla 1.0.15 of 22 February 2008. Here you can read what Joomla 1.0 stood for and how a website on Joomla 1.0 gets to Joomla 6 today.

Series "Joomla end of life" · part 1 of 9 · All Joomla versions at a glance

Joomla 1.0 in figures

Released17 September 2005 (Joomla 1.0.0)
Last version1.0.15 of 22 February 2008
Versions in the series16 (1.0.0 to 1.0.15)
End of security updates22 July 2009
Supported for3 years and 10 months
SuccessorJoomla 1.5

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What Joomla 1.0 stood for

  • Joomla was born in August 2005, when the development team left the Mambo project. At its core, Joomla 1.0 was Mambo 4.5.2 under a new name.
  • Extensions were called components, modules and mambots – the mambots later became today's plugins.
  • 16 versions in just under two and a half years, after that only security updates until July 2009.

More in the post Review: Joomla 1.0.

What that means today

Anyone still running a website on Joomla 1.0 today has been running it without security updates for more than 17 years. Known holes are listed publicly in databases and are searched for on purpose.

On top of that comes PHP: Joomla was only built for PHP 7 from version 3.5, and PHP 5 has had no updates since 31 December 2018 (php.net). Hardly any host still offers such old PHP versions – after a change at the host, a website like this often shows nothing but an error 500.

The way to Joomla 6

There is no update in the backend from Joomla 1.0 – too many major versions lie in between. The way is a rebuild on Joomla 6 into which we take over your content: articles, categories and menus. We rebuild the look or renew it with you, and we redirect old addresses to the new ones so that Google and your visitors find you again.

We name the effort after an inventory, before we start – more on the page Joomla update and migration.

Sources: Joomla downloads (versions and dates), Joomla Community Magazine, 30 July 2009, php.net (end of PHP versions).
Updated on 20 October 2026: dates checked against the official Joomla sources. The earlier version gave 22 September 2009 as the end-of-life date – correct is 22 July 2009.

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Series

Joomla end of life

  1. Joomla 1.0 · ended since 22 July 2009 (this post)
  2. Joomla 1.5 · ended since September 2012
  3. Joomla 1.6 · ended since 19 August 2011
  4. Joomla 1.7 · ended since 24 February 2012
  5. Joomla 2.5 · ended since 31 December 2014
  6. Joomla 3.x · ended since 17 August 2023
  7. Joomla 4.x · ended since 14 October 2025
  8. Joomla 5.x · security updates only until 12 October 2027
  9. Joomla 6.x · current until 16 October 2029

All versions at a glance: release, last version, end of support

Ufuk Avcu

Owner and developer of the Joomla Agency. Has been building and looking after Joomla websites since 2009.

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