Cloudflare Zero-Day Vulnerability Enables Global Host Access
cybersecurityzero-dayvulnerabilityCloudflareACMEfirewallHTTPexploitnetwork_security
The post details a zero-day vulnerability affecting Cloudflare, allowing an attacker to access internal or external hosts through malicious requests exploiting the ACME service. The flaw stems from misconfigured firewall rules and HTTP header manipulation. The author describes a method to bypass access restrictions and reach arbitrary targets. The issue was reported to Cloudflare prior to publication.