PHP Core Hit by Critical RCE Flaw, Emergency Patch Due October 21

A CVSS 10.0 remote code execution flaw in PHP core was disclosed by researcher cyb3rops, with an emergency patch set for release on October 21. Only PHP 8 will receive the fix, and eBPF tools can help detect exploitation beforehand.

2026-10-21 ~ 2026-10-21 · 3 related posts

• CVSS 10.0 RCE vulnerability disclosed in PHP core, patches only for PHP 8 — cyb3rops · 2026-10-21
• CVSS 10.0 RCE in PHP core: critical patches land Oct 21, PHP 8 only — cyb3rops · 2026-10-21
• PHP core RCE rated CVSS 10.0 lands Oct 20; eBPF tool spots exploitation early — cyb3rops · 2026-10-21