Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-21299. Reason: This candidate is a duplicate of CVE-2021-21299. Notes: All CVE users should reference CVE-2021-21299 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage

An issue was discovered in the hyper crate before 0.13.10 and 0.14.x before 0.14.3 for Rust. Request smuggling can occur when more than one Transfer-Encoding header is sent.