A single malformed character in a web request can let an unauthenticated attacker slip past the access controls that guard applications built on Starlette, the open-source Python framework that powers FastAPI, researchers said. The flaw, tracked as CVE-2026-48710 could allow attackers to bypass host-validation protections using malformed Host headers, according to an advi
FastAPI-based AI tools
AI Attack
CVE-2026-48710
CSO Online
Refer to CVE-2026-48710 NVD advisory