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Security news

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threat-intelvia Cloudflare Blog — Security

Introducing the Cloudflare PHP Capture the Flag challenge

We are launching a PHP Capture the Flag challenge integrated with our Bug Bounty program to test our WAF protections. Security researchers are invited to bypass our defenses and ca...

Oct 27, 2026 UTC
vulnerabilityvia Cloudflare Blog — Security

Cloudflare deploys protections against php2shell vulnerability

Cloudflare has deployed default web application firewall (WAF) protections for newly disclosed PHP vulnerabilities before public disclosure. The rules use request and response sign...

Oct 21, 2026 UTC