Some updates on affected services are posted here: https://wikitech.wikimedia.org/wiki/Incidents/2026-10-21_PHP_security_update/Community
Best, *Johan Jönsson*Manager, Movement Communications Wikimedia Foundation <https://wikimediafoundation.org/> On Wed, Oct 21, 2026 at 12:10 AM Johan Jönsson <[email protected]> wrote: > Hey everyone – due to a critical security advisory about the PHP language > <https://www.php.net/archive/2026.php#2026-10-20-1> (which we depend on), > many Wikimedia services are going to be affected. We are hoping to avoid > downtime to the wikis, but some supporting tools and services are > unfortunately going to be impacted. This is a complex operation on short > notice and we are still figuring out the details. More information will > come later this week. > > Best, > > > *Johan Jönsson*Manager, Movement Communications > Wikimedia Foundation <https://wikimediafoundation.org/> >
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