SecurityCloudflare Blogabout 2 hours ago
Cloudflare Launches PHP CTF Challenge
5 min read
Cloudflare launches a limited-time Capture the Flag challenge via its Bug Bounty program on HackerOne to test defenses against PHP vulnerabilities CVE-2026-109618 and CVE-2026-109619. Participants must bypass WAF protections on a stock PHP 8.5.11 target to recover a flag before the sandbox resets every few minutes.
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