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CVE-2025-48865: Fabio's Vanishing Act - How a Crafty Connection Header Can Make Your Security Headers Disappear!
TL;DR / Executive Summary Heads up, Fabio users! A sneaky vulnerability, CVE-2025-48865, has been uncovered in Fabio, the fast, modern, zero-conf load balancing router. This flaw allows malicious HTTP clients to manipulate or even completely remove critical custom headers (like X-Forwarded-Host, X-Real-Ip) that Fabio adds before forwarding requests to your