# Widespread PHP Vulnerability Could Cause Site Outages Today

Security researcher Brian Krebs reports a widespread flaw in PHP, the server-side scripting language used by most websites, that may trigger outages across many sites today. Because PHP underpins major platforms like WordPress, the bug could affect a large share of the web. Site operators are urged to patch or mitigate quickly.

**Importance:** 4/5

## Sources

### Security
- [Krebs on Security](https://krebsonsecurity.com/2026/10/widespread-php-flaw-may-cause-many-site-outages-today/) — Wed, 21 Oct 2026 15:26:07 +0000