CVE-2026-66752

EIP tracks 1 public exploit for CVE-2026-66752. PoCs published by theopaid.

AI-analyzed exploit summary Detailed technical analysis of CVE-2026-66752, an HTTP request smuggling vulnerability in tiny_http due to improper parsing of Transfer-Encoding header values. The vulnerability allows request smuggling when tiny_http is behind a front-end proxy that correctly parses Transfer-Encoding, or causes unanswered requests leading to DoS.

tiny-http through 0.12.0 contains an HTTP request smuggling vulnerability that allows remote attackers to desynchronize request framing by sending a Transfer-Encoding header with any value, including non-chunked codings, which causes the library to unconditionally apply chunk-decoding and discard Content-Length. Attackers can exploit the discrepancy between tiny_http's improper Transfer-Encoding parsing and a correctly-implemented front-end proxy to produce two distinct interpretations of a single byte stream, enabling request smuggling, and can additionally send non-chunked bodies with non-chunked Transfer-Encoding values to cause failed body reads that tie up connections and consume worker threads without signaling errors to clients.