2 hours ago · Global
PHP: The three letters that shut down sites all over the internet today
What's happening
SignalsMonitor is following this as a technology story. The Verge is the outlet attached so far. The reports are tied to Global. The first report grouped here was at 21 Oct 2026, 20:36 UTC. The headline in use is “PHP: The three letters that shut down sites all over the internet today”. This note is SignalsMonitor's own briefing, not the publisher's article.
What we know
Two bugs found with AI are behind major issues today for 4chan, DeviantArt, Wikipedia, and the blog where the bar around the corner posts pictures of people's dogs. The "critical vulnerabilities" were discovered in the PHP programming language, which underpins much of the internet, including any site built on WordPress.
Story timeline
Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.
- First reported by The Verge
PHP: The three letters that shut down sites all over the internet today
Reported by 1 outlet
- The Verge