Daniel MarshA fundamental parsing issue in Starlette, dubbed BadHost (CVE-2026-48710), enables attackers to bypass authentication by manipulating the HTTP Host header. This vulnerability, with historical parallels, critically impacts AI systems built on FastAPI, vLLM, and LiteLLM, which rely on Starlette. The attack chain is surprisingly simple, making immediate patching (Starlette 1.0.1) and…
#cybersecurity #starlette #cve202648710
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